Alpaca Trading API integration for Model Context Protocol (MCP)
Nothing to run from here
MyOnlineCalculator is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
446
tools declared
—
trust score
remote
at its publisher
—
calls last 7d
What it does
French calculators: net salary, minimum wage, taxes, mileage scale, VAT, conversions.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http macalculatriceenligne-mcp https://macalculatriceenligne.com/api/mcp
# 2 — ask your agent for something these tools do
# list_bundles, get_bundle_tools, calculate_french_income_tax and 443 more
MyOnlineCalculator costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
TRAll 10 servers
tresor4k10 servers
4 categories
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http macalculatriceenligne-mcp https://macalculatriceenligne.com/api/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
446 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
List all available tool bundles (grouped by domain). Use this to discover which tools are available for a specific topic instead of browsing all 500+ tools.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| _unused | string | no | No parameters needed |
Get the list of tools in a specific bundle. Returns tool names and descriptions for the requested domain bundle.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bundle_id | string | yes | Bundle ID from list_bundles |
Calculate French income tax (IR) 2026 on 2025 income per Article 197 CGI: progressive brackets with family quotient, family-quotient cap (1,807 EUR per extra half-share beyond 1 share single / 2 shares couple, 903.50 EUR per quarter share) and décote (897 EUR single / 1,483 EUR couple minus 45.25% of tax). Not implemented: the 4,262 EUR cap for single parents (parent isolé) and the special 1,079 /
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Annual net taxable income in euros |
| parts | number | no | Number of fiscal shares (1=single, 2=married, +0.5 per child) |
| couple | boolean | no | true = joint taxation (married/PACS couple, base 2 shares); false = individual taxation (base 1 share) |
Convert French gross salary to net salary for 2026 (cadre, non-cadre, or civil servant). Returns monthly/annual net, social contributions, employer cost. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly | number | yes | Gross monthly salary in euros |
| status | string | no | Employment status |
Calculate French VAT (TVA) — convert between HT (before tax) and TTC (after tax). Supports all 4 French VAT rates. Returns: {amount_ht, amount_ttc, vat_amount, vat_rate}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in euros |
| rate | string | no | VAT rate percentage |
| mode | string | no | Input mode: ht=before tax, ttc=after tax |
Calculate mortgage/loan monthly payment, total cost, and optional amortization schedule. Returns: {principal, months, monthly_payment, total_interest, total_cost}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Loan amount in currency units |
| annual_rate | number | yes | Annual interest rate in % |
| years | number | yes | Loan duration in years |
| with_schedule | boolean | no | Include first 12 months + last month amortization |
Compute compound interest growth A=P(1+r/n)^(nt). Use for savings, retirement projections, investment forecasting. Returns final amount, total interest, and yearly breakdown. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Initial amount |
| annual_rate | number | yes | Annual interest rate in % |
| years | number | yes | Investment duration in years |
| compounds_per_year | number | no | Compounding frequency per year |
Compute simple interest I=P·r·t. Use for short-term loans, basic savings accounts, and homework. Returns interest amount and final balance. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Initial amount |
| annual_rate | number | yes | Annual interest rate in % |
| years | number | yes | Duration in years |
Calculate monthly loan payment for any generic loan. Returns: {principal, monthly_payment, total_cost, total_interest}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Loan amount |
| annual_rate | number | yes | Annual interest rate in % |
| months | number | yes | Loan duration in months |
Compute break-even point in units and revenue. Use for business plans and pricing decisions. Inputs: fixed costs, price/unit, variable cost/unit. Returns break-even units and revenue. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| fixed_costs | number | yes | Total fixed costs |
| price_per_unit | number | yes | Selling price per unit |
| variable_cost_per_unit | number | yes | Variable cost per unit |
Calculate gross margin, net margin, and markup percentage. Returns: {revenue, cost}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| revenue | number | yes | Total revenue/selling price |
| cost | number | yes | Total cost |
Compute Return on Investment as a percentage. Use to evaluate investments, marketing spend, or projects. Inputs: investment cost, return value. Returns ROI %, profit, and multiple. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| investment | number | yes | Initial investment amount |
| return_value | number | yes | Final value or total returns |
Calculate discounted price with optional successive discounts. Returns: {original_price, price_after_first, effective_discount_pct}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| original_price | number | yes | Original price |
| discount_pct | number | yes | First discount percentage |
| discount2_pct | number | no | Optional second successive discount |
Calculate VAT/GST/sales tax for any country with custom rate. Returns: {amount_before_tax, amount_after_tax, tax_amount, tax_rate}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount |
| rate | number | yes | Tax rate in % |
| mode | string | no | ht=before tax, ttc=after tax |
Calculate unit cost price from raw materials, labor, and overhead. Returns: {total_cost}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| raw_materials | number | yes | Raw material cost |
| labor | number | yes | Labor cost |
| overhead | number | yes | Overhead/indirect costs |
| quantity | number | yes | Number of units produced |
Compute debt-to-income (DTI) ratio. Use for mortgage qualification or financial health checks. Inputs: monthly debt, monthly gross income. Returns DTI % and risk category. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_debt | number | yes | Total monthly debt payments |
| monthly_income | number | yes | Gross monthly income |
Adjust a nominal amount to a target year using a constant inflation rate. Use for real-value comparisons across time. Inputs: amount, inflation rate %, years. Returns adjusted value and total inflation factor. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Original amount |
| inflation_rate | number | yes | Annual inflation rate in % |
| years | number | yes | Number of years |
Compare purchasing power between two years. Use to translate historical prices, salaries, or savings to today's value. Inputs: amount, from-year, to-year, average inflation %. Returns equivalent value. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount to compare |
| from_year | number | yes | Starting year |
| to_year | number | yes | Target year |
| avg_inflation | number | no | Average annual inflation rate in % |
Calculate percentages: value of total, percentage change, what percent. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| operation | string | yes | of: X% of Y; change: from A to B; what_pct: X is what % of Y |
| a | number | yes | First value |
| b | number | yes | Second value |
Compute simple, weighted, geometric, or harmonic mean. Use for grade averages, returns, or rates. Inputs: values list, optional weights, mode. Returns mean and detail. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| values | array | yes | Array of numbers |
| weights | array | no | Optional weights for weighted average |
Find missing side of right triangle using Pythagorean theorem. Returns: {error}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | number | no | Side a length |
| b | number | no | Side b length |
| c | number | no | Hypotenuse c length |
Compute area for common 2D shapes (rectangle, triangle, circle, trapezoid, etc.). Use for geometry, real estate, or paint estimates. Inputs: shape + dimensions. Returns area in input-units squared. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| shape | string | yes | Shape type |
| length | number | no | Length or base |
| width | number | no | Width |
| height | number | no | Height |
| radius | number | no | Radius |
| side | number | no | Side for hexagon |
| d1 | number | no | Diagonal 1 for rhombus |
| d2 | number | no | Diagonal 2 for rhombus |
| semi_major | number | no | Semi-major axis for ellipse |
| semi_minor | number | no | Semi-minor axis for ellipse |
Compute volume for common 3D shapes (cube, cylinder, sphere, cone, prism). Use for geometry, packaging, or construction. Inputs: shape + dimensions. Returns volume in input-units cubed. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| shape | string | yes | Shape |
| length | number | no | Length/side |
| width | number | no | Width |
| height | number | no | Height |
| radius | number | no | Radius |
| base_area | number | no | Base area for prism/pyramid |
Calculate perimeter/circumference for common shapes. Returns: {shape, perimeter}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| shape | string | yes | Shape |
| length | number | no | Length/side a |
| width | number | no | Width/side b |
| side_c | number | no | Side c for triangle |
| radius | number | no | Radius |
| side | number | no | Side for square/hexagon |
| semi_major | number | no | Semi-major for ellipse |
| semi_minor | number | no | Semi-minor for ellipse |
Calculate GCD (PGCD) and LCM (PPCM) of two integers using Euclidean algorithm. Returns: {gcd, lcm}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | integer | yes | First integer |
| b | integer | yes | Second integer |
Solve 1st degree (ax+b=0) or 2nd degree (ax²+bx+c=0) equations. Returns: {error}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| degree | string | yes | Equation degree |
| a | number | yes | Coefficient a |
| b | number | yes | Coefficient b |
| c | number | no | Coefficient c (for degree 2) |
Calculate nth term and sum of arithmetic or geometric sequence. Returns: {common_difference, nth_term, sum_of_n}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| type | string | yes | Sequence type |
| first_term | number | yes | First term (a1) |
| common | number | yes | Common difference (arithmetic) or ratio (geometric) |
| n | integer | yes | Number of terms |
Perform fraction operations: add, subtract, multiply, divide, simplify. Returns: {input, result, decimal}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| operation | string | yes | Operation |
| num1 | integer | yes | Numerator 1 |
| den1 | integer | yes | Denominator 1 |
| num2 | integer | no | Numerator 2 |
| den2 | integer | no | Denominator 2 |
Calculate logarithm in any base (natural, common, binary). Returns: {result}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Value to take log of |
| base | string | no | Log base: e=natural, 10=common, 2=binary |
Calculate factorial, permutations P(n,r), and combinations C(n,r). Returns: {factorial}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| n | integer | yes | n value |
| r | integer | no | r value for P(n,r) and C(n,r) |
Compute sin, cos, tan and inverse functions in degrees or radians. Use for geometry, physics, navigation. Inputs: function, value, unit. Returns result and reciprocal. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| func | string | yes | Trig function |
| value | number | yes | Input value |
| unit | string | no | Input angle unit |
Convert numbers between bases (binary, octal, decimal, hexadecimal, any base 2-36). Returns: {input, decimal_value, result}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | string | yes | Number as string |
| from_base | integer | yes | Source base |
| to_base | integer | yes | Target base |
Convert temperature between Celsius, Fahrenheit, and Kelvin. Use for cooking, weather, science. Inputs: value, from, to. Returns converted temperature. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Temperature value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert distance between metric (m, km, cm, mm) and imperial (in, ft, yd, mi) plus nautical miles. Use for travel, sport, or engineering. Inputs: value, from, to. Returns: {input, factor}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Distance value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert weight/mass between kg, g, mg, lb, oz, st, tonne. Use for cooking, shipping, or fitness. Inputs: value, from, to. Returns converted mass. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Weight value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert volume between L, mL, cL, fl_oz, cup, tbsp, tsp, gal_us, gal_uk. Use for cooking and science. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Volume value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert area between m², km², ha, are, acre, ft², yd², cm². Use for real estate, agriculture, or construction. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Area value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert speed between km/h, mph, m/s, knots, ft/s. Use for travel, sport, or maritime/aviation. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Speed value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert pressure between Pa, kPa, MPa, bar, psi, atm, mmHg, mbar, torr. Use for engineering, tires, weather. Inputs: value, from-unit, to-unit. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Pressure value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert between digital storage units (binary and decimal). Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Storage value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert energy between J, kJ, cal, kcal, kWh, BTU, eV, ft-lb. Use for nutrition, electricity, science. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Energy value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert angle between degrees, radians, gradians, turns, arcminutes, arcseconds. Use for math, navigation, surveying. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Angle value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert time between seconds, minutes, hours, days, weeks, months, years. Use for project planning or unit homogenization. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Time value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert fuel consumption between L/100km, mpg-US, mpg-UK, km/L. Use for car comparison across regions. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Consumption value |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert cooking measurements between ml, L, g, kg, cup, tbsp, tsp, fl_oz, oz. Use for recipe scaling and translating. Inputs: value, from, to. Returns: {input}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Quantity |
| from | string | yes | Source unit |
| to | string | yes | Target unit |
Convert shoe sizes between EU, US (men/women), and UK systems. Use for online shopping. Inputs: size, from, to, gender. Returns converted size. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Shoe size |
| from | string | yes | Source system |
| to | string | yes | Target system |
Compute simple or weighted grade average. Use for school report cards. Inputs: grades list, optional weights/coefficients. Returns weighted average and missing-grade-needed forecast. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| grades | array | yes | Array of grades |
| coefficients | array | no | Optional array of coefficients/weights |
Calculate binomial probability P(X=k) and cumulative P(X<=k). Returns: {exact_probability, cumulative_probability, std_deviation}. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| n | integer | yes | Number of trials |
| k | integer | yes | Number of successes |
| p | number | yes | Probability of success per trial |
Calculate descriptive statistics: mean, median, mode, std dev, quartiles. Returns: {count, std_deviation, min, max, range, iqr}. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| values | array | yes | Array of numbers |
Solve rule of three (cross-multiplication): if a→b, then c→? Use for proportions, recipe scaling, or unit pricing. Inputs: a, b, c. Returns x. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | number | yes | Known value A |
| b | number | yes | Corresponding value B |
| x | number | yes | New value of A |
Compare unit prices across packages to find the best deal. Use for shopping. Inputs: list of {price, quantity, unit}. Returns price per unit and best buy. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| items | array | yes | Items to compare |
Compute restaurant tip and per-person split. Use for shared meals. Inputs: bill, tip %, people count. Returns tip, total, per-person share. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bill | number | yes | Bill amount |
| tip_pct | number | no | Tip percentage |
| split | integer | no | Number of people splitting |
Estimate French Brevet (DNB) score from grades and continuous-control marks. Use for collège students forecasting their result. Inputs: grades by subject, continuous control. Returns total points and mention. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| socle_commun | number | yes | Socle commun points (50-400) |
| french | number | yes | French exam score (/100) |
| math | number | yes | Math exam score (/100) |
| history_geo | number | yes | History-Geography score (/50) |
| science | number | yes | Science score (/50) |
| oral | number | yes | Oral exam score (/100) |
Estimate French Baccalauréat final score from grades and coefficients. Use to track lycée results before official scores. Inputs: grades by subject with coefficients. Returns weighted average and mention. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| continuous_control | number | yes | Continuous assessment score (/720 = 40%) |
| french_written | number | yes | French written exam (/20, coeff 5) |
| french_oral | number | yes | French oral exam (/20, coeff 5) |
| philosophy | number | yes | Philosophy (/20, coeff 8) |
| specialty1 | number | yes | Specialty 1 (/20, coeff 16) |
| specialty2 | number | yes | Specialty 2 (/20, coeff 16) |
| grand_oral | number | yes | Grand oral (/20, coeff 10) |
Estimate ECTS credit workload (1 ECTS ≈ 25-30 study hours). Use for university course planning across Europe. Inputs: course hours, credits target. Returns expected workload and balance. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hours_per_week | number | yes | Study hours per week |
| weeks | number | yes | Number of weeks |
| hours_per_credit | number | no | Hours per ECTS credit (standard: 25-30) |
Estimate Parcoursup admission score from bac + lycée grades. Use for French university candidates. Inputs: grades and coefficients per subject. Returns estimated score. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bac_average | number | yes | Expected/actual bac average (/20) |
| option_bonus | number | no | Bonus points from options |
Calculate numerology life path number from birth date. Returns: {life_path_number, meaning}. See list_bundles for related 'fun' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_date | string | yes | Birth date in YYYY-MM-DD format |
Determine Chinese zodiac animal and element from birth year. Returns: {full_sign}. See list_bundles for related 'fun' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_year | integer | yes | Birth year |
Compute physical, emotional, and intellectual biorhythm cycles for a date based on birth date. Use for self-tracking enthusiasts (pseudoscience). Inputs: birth date, target date. Returns 3 cycle values (-100 to +100) and zone. See list_bundles for related 'fun' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_date | string | yes | Birth date YYYY-MM-DD |
| target_date | string | yes | Target date YYYY-MM-DD |
Calculate exact age in multiple units from birth date. Returns: {weeks, hours, minutes, seconds}. See list_bundles for related 'fun' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_date | string | yes | Birth date YYYY-MM-DD |
Find the day of the week for any date (Zeller's congruence). Use for historical dates or birthday checks. Inputs: day, month, year. Returns weekday name. See list_bundles for related 'fun' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| date | string | yes | Date in YYYY-MM-DD format |
Compute cement, sand, gravel, and water for a given concrete volume (NF DTU 21). Use for construction projects. Inputs: volume m³, mix ratio. Returns weights of each ingredient. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| volume_m3 | number | yes | Volume in m³ |
Compute paint liters needed for a surface with chosen number of coats. Use for painting projects. Inputs: surface m², coats, paint coverage m²/L. Returns liters and number of cans. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Area in m² |
| coats | integer | no | Coats |
| coverage | number | no | m²/liter |
Compute tiles needed including a waste margin (default 10%). Use for floor or wall tiling. Inputs: surface m², tile size, waste %. Returns tile count and surface ordered. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Area m² |
| tile_w_cm | number | yes | Tile width cm |
| tile_l_cm | number | yes | Tile length cm |
| waste_pct | number | no | Waste % |
Compute slope as percentage, angle in degrees, and ratio. Use for ramps, roofs, or terrain analysis. Inputs: rise, run. Returns slope% and angle°. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rise_m | number | yes | Vertical rise m |
| run_m | number | yes | Horizontal run m |
Calculate staircase dimensions using Blondel formula. Returns: {step_height_cm, giron_cm, blondel, blondel_ok}. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| total_height_cm | number | yes | Total height cm |
Compute thermal resistance R = thickness/lambda. Use for insulation specification (RT2020/RE2020). Inputs: thickness m, conductivity λ W/m·K. Returns R-value m²·K/W. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| thickness_mm | number | yes | Thickness mm |
| lambda | number | yes | Conductivity W/(m.K) |
Compute bricks or blocks needed for a wall including waste margin. Use for masonry projects. Inputs: wall dimensions, brick size, waste %. Returns brick count and pallets. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Wall length m |
| height_m | number | yes | Wall height m |
| type | string | no | Brick type |
Compute gravel volume (m³) and weight (tonnes) for a surface and depth. Use for paths, foundations, drainage. Inputs: area, depth, gravel density. Returns volume and weight. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Length m |
| width_m | number | yes | Width m |
| depth_cm | number | yes | Depth cm |
Compute electrical cable cross-section (mm²) per NF C 15-100. Use for residential wiring. Inputs: power kW, voltage, length, max voltage drop %. Returns required section. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| power_w | number | yes | Power W |
| voltage | number | no | Voltage |
| length_m | number | yes | Cable length m |
| max_drop_pct | number | no | Max voltage drop % |
Compute wallpaper rolls needed for a room with pattern repeat factor. Use for renovation budget. Inputs: room dimensions, roll size, pattern repeat. Returns roll count. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| perimeter_m | number | yes | Room perimeter m |
| height_m | number | yes | Height m |
| roll_width | number | no | Roll width m |
| roll_length | number | no | Roll length m |
Compute Ohm's law: V=I·R. Solve for any of V, I, R given the other two. Use for electronics. Inputs: any 2 of (V volts, I amps, R ohms). Returns the third. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| voltage | number | no | Volts |
| current | number | no | Amps |
| resistance | number | no | Ohms |
Compute force using Newton's second law F=m·a. Use for physics problems. Inputs: mass kg, acceleration m/s². Returns force in newtons. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mass_kg | number | no | Mass kg |
| acceleration | number | no | m/s² |
| force_n | number | no | Newtons |
Compute speed of sound in air at a given temperature. Use for physics or audio engineering. Formula: c=331.3+0.606·T_C. Inputs: temperature °C. Returns speed in m/s. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| temperature_c | number | yes | Celsius |
Compute dilution C1·V1=C2·V2. Solve for any unknown. Use for chemistry, lab work, pharmacy. Inputs: any 3 of (C1, V1, C2, V2). Returns the fourth. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| c1 | number | no | Initial concentration |
| v1 | number | no | Initial volume |
| c2 | number | no | Final concentration |
| v2 | number | no | Final volume |
Compute pH from H+ concentration or vice versa. Use for chemistry or aquarium care. Formula: pH=-log10[H+]. Inputs: pH or [H+] mol/L. Returns the missing value and acidity class. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| h_concentration | number | no | H+ mol/L |
| ph_value | number | no | pH |
Compute electrical power for single or three-phase circuits. Use for electrical engineering. Inputs: voltage, current, phase, power factor. Returns power kW and apparent power kVA. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| voltage | number | yes | Volts |
| current | number | yes | Amps |
| phase | string | no | Phase |
| cos_phi | number | no | Power factor |
Compute density, mass, or volume given the other two. ρ=m/V. Use for materials, chemistry, fluid dynamics. Inputs: any 2 of (mass, volume, density). Returns the third. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mass_kg | number | no | Mass kg |
| volume_m3 | number | no | Volume m³ |
| density | number | no | kg/m³ |
Compute remaining quantity after radioactive decay. Use for physics or carbon dating. Formula: N=N0·(0.5)^(t/half-life). Inputs: initial qty, half-life, elapsed time. Returns remaining qty. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| initial | number | yes | Initial amount |
| half_life | number | yes | Half-life |
| time | number | yes | Time elapsed |
Compute fuel cost for a journey. Use for trip budgeting or company expense. Inputs: distance km, consumption L/100km, fuel price €/L. Returns total cost and L used. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| distance_km | number | yes | Distance km |
| consumption | number | yes | L/100km |
| fuel_price | number | yes | Price/liter |
Compute reaction + braking distance by road condition (dry/wet/icy). Use for driver safety education. Inputs: speed km/h, reaction time s, road type. Returns total stopping distance m. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| speed_kmh | number | yes | Speed km/h |
| condition | string | no | Road |
Compute electricity cost for an appliance. Use for energy budgeting. Inputs: power W, daily usage hours, kWh price. Returns daily/monthly/yearly cost. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| power_w | number | yes | Watts |
| hours_day | number | yes | Hours/day |
| days | number | no | Days |
| price_kwh | number | no | EUR/kWh |
Compute the rent-to-income ratio. Use to assess housing affordability (rule of thumb: keep under 33%). Inputs: monthly rent, monthly gross income. Returns rent ratio % and verdict. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rent | number | yes | Monthly rent |
| income | number | yes | Monthly income |
Scale recipe ingredients up or down by a factor or new servings count. Use for cooking adjustments. Inputs: ingredients list, original servings, new servings. Returns scaled ingredient list. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| original | number | yes | Original servings |
| target | number | yes | Target servings |
| ingredients | array | yes | Ingredients |
Compute swimming pool water volume in m³ and liters. Use for pool maintenance dosing. Inputs: shape, dimensions. Returns volume m³ and L. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| shape | string | yes | Shape |
| length_m | number | no | Length m |
| width_m | number | no | Width m |
| depth_m | number | yes | Avg depth m |
| diameter_m | number | no | Diameter (round) |
Estimate annual personal carbon footprint (tCO₂e). Use for sustainability awareness. Inputs: housing, transport, diet, lifestyle. Returns total emissions and breakdown. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| km_car | number | no | Car km/year |
| km_plane | number | no | Flight km/year |
| kwh | number | no | Electricity kWh/year |
| meat_kg_week | number | no | Meat kg/week |
Compute restaurant tip following local custom (US 18-22%, FR included, JP no tip, etc.). Use when traveling. Inputs: bill, country. Returns recommended tip and total. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bill | number | yes | Bill |
| country | string | yes | Country |
Compute total curtain width using a fullness factor (1.5-3.0×). Use for window dressing. Inputs: window width m, fullness ratio. Returns total fabric width. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| window_cm | number | yes | Window width cm |
| fullness | string | no | Fullness |
Compute soil volume (m³) and number of bags needed for a garden bed. Use for gardening. Inputs: area, depth, bag volume. Returns m³ and bag count. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Length m |
| width_m | number | yes | Width m |
| depth_cm | number | yes | Depth cm |
Estimate moving volume (m³) by home type and contents. Use for moving company quotes. Inputs: home size, rooms, furniture density. Returns m³ and truck size recommendation. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| type | string | yes | Home type |
Compute flooring cost including waste margin. Use for renovation budget. Inputs: surface m², product price/m², waste %. Returns total cost and m² to order. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Length m |
| width_m | number | yes | Width m |
| price_m2 | number | no | EUR/m² |
| waste_pct | number | no | Waste % |
Calculate US federal income tax for 2026 using progressive brackets with standard deduction. Returns: {gross_income, standard_deduction, taxable_income, federal_tax, effective_rate_pct, marginal_rate_pct, ...}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Gross annual income in USD |
| filing_status | string | no | Filing status |
Calculate US FICA taxes (Social Security + Medicare) employee share for 2026. Returns: {gross_annual, social_security_taxable, social_security_tax, medicare_base_tax, medicare_additional_tax, medicare_total, ...}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_annual | number | yes | Gross annual salary in USD |
Calculate US 401(k) contribution, employer match, and total retirement savings. Returns: {annual_salary, employee_contribution, employer_match, total_annual_contribution, catch_up_eligible, max_employee_limit}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_salary | number | yes | Annual salary in USD |
| contribution_pct | number | yes | Employee contribution percentage (1-100) |
| employer_match_pct | number | no | Employer match percentage of employee contribution (default 50%) |
| employer_match_limit | number | no | Employer match cap as % of salary (default 6%) |
| age | integer | no | Employee age (50+ enables catch-up contributions) |
Calculate US mortgage with PMI, property tax, and insurance estimates. Returns: {home_price, down_payment, loan_amount, monthly_pi, monthly_pmi, monthly_property_tax, ...}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| home_price | number | yes | Home purchase price in USD |
| down_payment_pct | number | no | Down payment percentage (default 20%) |
| annual_rate | number | yes | Annual mortgage interest rate in % |
| years | integer | no | Loan term in years (default 30) |
Calculate US capital gains tax — short-term (ordinary rates) or long-term (preferential rates). Returns: {tax, gain_type}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Original purchase price in USD |
| sale_price | number | yes | Sale price in USD |
| holding_period_months | number | yes | Holding period in months |
| filing_status | string | no | Filing status for rate thresholds |
Calculate US Child Tax Credit for 2026 with phase-out based on AGI. Returns: {agi, base_credit, credit_reduction, final_credit}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| children_under_17 | integer | yes | Number of qualifying children under age 17 |
| agi | number | yes | Adjusted Gross Income in USD |
| filing_status | string | no | Filing status |
Calculate US student loan repayment under standard, graduated, or income-driven plans. Returns: {loan_balance}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| loan_balance | number | yes | Outstanding loan balance in USD |
| annual_rate | number | yes | Annual interest rate in % |
| plan | string | no | Repayment plan |
| annual_income | number | no | Annual income (required for income_driven plan) |
Estimate US bi-weekly net paycheck after federal/state withholding and FICA. Returns: {annual_salary, fica_biweekly, net_biweekly, net_annual_estimate}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_salary | number | yes | Annual salary in USD |
| filing_status | string | no | Federal withholding filing status |
| state | string | no | State for state income tax (TX/FL/WA have no state tax) |
Estimate annual US property tax by state using effective tax rates. Returns: {home_value, effective_rate_pct, annual_property_tax, monthly_property_tax}. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| home_value | number | yes | Assessed home value in USD |
| state | string | no | State (affects effective property tax rate) |
Compute US state income tax for a chosen state. Use for paycheck planning across states. Inputs: state, gross income, filing status. Returns state tax due and effective rate. See list_bundles for related 'finance-us' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Annual taxable income in USD |
| state | string | yes | US state |
Calculate UK income tax for 2025/26 using HMRC progressive brackets with personal allowance taper. Returns: {gross_income, personal_allowance, taxable_income, income_tax, effective_rate_pct, marginal_rate_pct}. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Annual gross income in GBP |
Calculate UK National Insurance contributions (Class 1 employee) for 2025/26. Returns: {annual_salary, ni_annual, ni_monthly, effective_rate_pct}. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_salary | number | yes | Annual gross salary in GBP |
Calculate UK student loan repayments based on plan type and salary. Returns: {annual_salary, repayment_rate_pct, annual_repayment, monthly_repayment}. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_salary | number | yes | Annual gross salary in GBP |
| plan | string | no | Student loan plan: 1, 2, 4, 5, or postgrad |
Calculate UK VAT — convert between net (ex-VAT) and gross (inc-VAT) amounts. Returns: {amount_net, amount_gross, vat_amount, vat_rate_pct}. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in GBP |
| rate | string | no | VAT rate: 0% (zero), 5% (reduced), 20% (standard) |
| mode | string | no | Input mode: ht=net (ex-VAT), ttc=gross (inc-VAT) |
Compute UK Council Tax based on property band and local authority rate. Use for UK residents and home buyers. Inputs: band (A-H), local authority. Returns annual and monthly council tax. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| band | string | yes | Council Tax band (A=lowest, H=highest) |
| region | string | no | Region |
Calculate Moroccan income tax (IR) using DGI progressive brackets with family deductions. Returns: {annual_income_mad, taxable_income, income_tax_mad, effective_rate_pct, marginal_rate_pct, brackets}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_income_mad | number | yes | Annual gross income in Moroccan Dirhams (MAD) |
| dependents | integer | no | Number of dependents (360 MAD deduction each, max 6) |
Calculate Moroccan CNSS contributions (employee and employer shares). Returns: {gross_monthly_mad, employee, employer, pension_ceiling_mad}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly_mad | number | yes | Gross monthly salary in MAD |
Compute Moroccan VAT (TVA) — convert between HT and TTC. Use for invoicing in Morocco. Inputs: amount, rate (20/14/10/7), mode (ht/ttc). Returns HT, TTC, tax amount. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in MAD |
| rate | string | no | VAT rate: 0%, 7%, 10%, 14%, or 20% (standard) |
| mode | string | no | Input mode: ht=hors taxe, ttc=toutes taxes comprises |
Calculate Moroccan property income tax (profit foncier / revenus fonciers). Returns: {annual_rent_mad, taxable_income, income_tax_mad, effective_rate_pct, marginal_rate_pct}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_rent_mad | number | yes | Annual rental income in MAD |
| expenses_pct | number | no | Deductible expenses as % of rent (default 40%) |
| dependents | integer | no | Number of dependents for family deduction |
Calculate Senegalese income tax (IRPP) using DGI progressive brackets in XOF. Returns: {annual_income_xof, income_tax_xof, effective_rate_pct, marginal_rate_pct, brackets}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_income_xof | number | yes | Annual gross income in CFA Francs (XOF) |
Calculate Senegalese social contributions (CSS/IPRES) for employee and employer. Returns: {gross_monthly_xof, employee, employer}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly_xof | number | yes | Gross monthly salary in XOF |
| accident_rate_pct | number | no | Work accident insurance rate 1-5% (employer only, default 3%) |
Compute Senegalese VAT (TVA) — 18% standard rate. Use for invoicing in Senegal. Inputs: amount, mode (ht/ttc). Returns HT, TTC, tax amount. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in XOF |
| rate | number | no | TVA rate in % (standard 18%) |
| mode | string | no | Input mode: ht=hors taxe, ttc=toutes taxes comprises |
Calculate Quebec provincial income tax (Revenu Québec) with basic personal amount deduction. Returns: {income_cad, basic_personal_amount, taxable_income, provincial_tax, effective_rate_pct, marginal_rate_pct, ...}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income_cad | number | yes | Annual income in Canadian dollars (CAD) |
Calculate Canadian federal income tax (CRA) with basic personal amount deduction. Returns: {income_cad, basic_personal_amount, taxable_income, federal_tax, effective_rate_pct, marginal_rate_pct, ...}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income_cad | number | yes | Annual income in Canadian dollars (CAD) |
Calculate combined Quebec + federal income tax with the Quebec federal abatement (16.5%). Returns: {income_cad, quebec_provincial_tax, federal_gross_tax, federal_abatement_qc, federal_net_tax, total_combined_tax, ...}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income_cad | number | yes | Annual income in CAD |
Calculate Quebec Pension Plan (RRQ) contributions for employee. Returns: {gross_annual_cad, rrq_base_earnings, rrq_contribution_tier1, rrq_additional_earnings, rrq_contribution_tier2, total_rrq_contribution, ...}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_annual_cad | number | yes | Gross annual earnings in CAD |
Calculate Canadian Employment Insurance (EI) premiums for Quebec and non-Quebec residents. Returns: {gross_annual_cad, max_insurable_earnings, insurable_earnings, employee_rate_pct, employee_premium}. See list_bundles for related 'finance-afrique-quebec' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_annual_cad | number | yes | Gross annual insurable earnings in CAD |
| province | string | no | Province: QC (Quebec rate) or other (standard rate) |
Calculate French notary fees (frais de notaire) for a real estate purchase. Returns: {price, droits_mutation, emoluments_notaire, frais_divers, total_frais, total_pct}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| price | number | yes | Purchase price in euros |
| type | string | no | Property type: ancien (old) or neuf (new) |
Calculate French inheritance tax (droits de succession) based on relationship and amount. Returns: {amount, abatement, taxable_base, tax_due, effective_rate_pct, marginal_rate_pct}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Inherited amount in euros |
| relationship | string | yes | Relationship to deceased: spouse, child, sibling, other |
Estimate French child support (pension alimentaire) based on income, custody and number of children. Returns: {income, rate_pct, monthly_support, annual_support}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Net monthly income of the paying parent in euros |
| children_count | integer | yes | Number of children (1-6) |
| custody | string | no | Custody type: full (garde principale), alternating (alternee), reduced (visite et hebergement) |
Compute French property capital gains tax (plus-value immobilière) including duration abatements. Use for sellers of secondary residence. Inputs: purchase price, sale price, years held, work cost. Returns tax due, social charges, net gain. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Original purchase price in euros |
| sale_price | number | yes | Sale price in euros |
| years_held | number | yes | Number of years the property was held |
Calculate French auto-entrepreneur (micro-enterprise) net income and social charges. Returns: {social_charges_rate_pct, social_charges, abatement_fiscal_pct, taxable_income_approx, net_before_tax, cfe_estimate_eur}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| revenue | number | yes | Annual revenue (chiffre d'affaires) in euros |
| category | string | no | Activity category: vente (sales), service_bic, service_bnc, liberal |
Estimate French prime d'activité monthly amount (CAF benefit). Use for low-income workers checking eligibility. Inputs: net monthly salary, household composition. Returns estimated benefit and eligibility note. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| salary | number | yes | Net monthly salary in euros |
| household_size | integer | no | Number of people in household (1-6) |
Estimate French housing aid (APL — Aide Personnalisee au Logement). Returns: {rent, rent_ceiling, estimated_apl, note}.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rent | number | yes | Monthly rent in euros |
| city_zone | string | no | City zone: 1 (Paris/IDF), 2 (large cities), 3 (rural) |
| household_size | integer | no | Number of people in household (1-6) |
Estimate French basic retirement pension (retraite de base Assurance Vieillesse). Returns: {average_salary_best25, annual_pension, max_monthly_pension, prorata_pct}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| average_salary_best25 | number | yes | Average annual salary of best 25 years in euros |
| years_contributed | number | yes | Total years of contribution |
| target_years | number | no | Target quarters for full pension (default 172 = 43 years) |
Calculate French severance pay for rupture conventionnelle or licenciement. Returns: {monthly_salary, years_first_10, years_above_10, gross_indemnite, note}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_salary | number | yes | Reference gross monthly salary in euros |
| years_seniority | number | yes | Years of seniority in the company |
Estimate French unemployment benefit (ARE — Aide au Retour a l'Emploi). Returns: {daily_ref_salary, daily_are, monthly_are_estimate, min_daily, max_daily_75pct_sjr}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| daily_ref_salary | number | yes | Salaire Journalier de Reference (SJR) in euros — typically last 12 months salary / 261 |
Estimate net income from portage salarial (freelance via umbrella company). Returns: {portage_management_fee_10pct, social_charges_45pct, net_monthly, net_annual_estimate, net_ratio_pct}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| daily_rate | number | yes | Daily billing rate (TJM) in euros |
| days_per_month | number | no | Billable days per month (default 20) |
Calculate Belgian personal income tax (IPP/PB) using 2026 progressive brackets. Returns: {income, tax_free_amount, taxable_base, income_tax, effective_rate_pct, marginal_rate_pct, ...}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Annual taxable income in euros |
Convert Belgian gross monthly salary to net salary (approximation). Returns: {gross_monthly, social_cotisations_13_07pct, special_social_contribution, professional_withholding_tax, net_monthly, net_annual, ...}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly | number | yes | Gross monthly salary in euros |
Calculate Belgian VAT — convert between HT and TTC. Returns: {amount_ht, amount_ttc, vat_amount, vat_rate}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in euros |
| rate | string | no | VAT rate: 6%, 12% or 21% |
| mode | string | no | Input mode: ht=before tax, ttc=after tax |
Calculate Belgian self-employed social contributions (cotisations INASTI). Returns: {annual_income, tier1_up_to_73850_at_20_5pct, tier2_73850_to_108785_at_14_16pct, tier3_above_108785, total_contributions, effective_rate_pct}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_income | number | yes | Annual net professional income in euros |
Calculate Belgian meal voucher (cheque-repas / maaltijdcheque) benefit. Returns: {face_value_per_voucher, employer_contribution_per_voucher, employee_contribution_per_voucher, monthly_total_vouchers, monthly_employer_cost, monthly_employee_contribution, ...}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| days_per_month | number | no | Working days per month |
| employer_contribution | number | no | Employer contribution per voucher (max 6.91 EUR) |
| employee_contribution | number | no | Employee contribution per voucher (min 1.09 EUR) |
Estimate Belgian retirement pension based on career years and average salary. Use for retirement planning in Belgium. Inputs: years of contribution, average salary, status (employee/self-employed). Returns monthly pension estimate. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| career_years | number | yes | Number of career years |
| average_salary | number | yes | Average annual salary in euros |
| household_type | string | no | Pension type: single rate (60%) or household rate (75%) |
Calculate Belgian benefit-in-kind for company car (avantage de toute nature voiture). Returns: {co2_reference, benefit_rate_pct, annual_taxable_benefit, monthly_taxable_benefit, estimated_monthly_tax_impact}. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| catalog_value | number | yes | Catalog value of the vehicle (HTVA) in euros |
| co2 | number | yes | CO2 emissions in g/km |
| fuel_type | string | no | Fuel type |
Compute Belgian donation tax (droits de donation) by region (Bruxelles/Flandre/Wallonie). Use for estate planning in Belgium. Inputs: region, amount, recipient relation. Returns tax due and effective rate. See list_bundles for related 'finance-belgique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Donation amount in euros |
| relationship | string | yes | Relationship: direct_line (parents/children), between_spouses (or cohabitants), others |
Calculate Swiss income tax — federal + estimated cantonal tax. Returns: {income, federal_tax, federal_marginal_rate_pct, cantonal_tax_estimate, cantonal_rate_pct, effective_rate_pct, ...}. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| income | number | yes | Annual taxable income in CHF |
| canton | string | no | Canton of residence |
Convert Swiss gross monthly salary to estimated net salary. Returns: {gross_monthly, avs_ai_apg_5_3pct, ac_chomage_1_1pct, lpp_2e_pilier_10pct, lamal_health_fixed, net_monthly, ...}. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly | number | yes | Gross monthly salary in CHF |
Compute Swiss VAT (TVA/MWST) — convert between net (HT) and gross (TTC). Use for invoicing or expense reimbursements in Switzerland. Inputs: amount, rate (8.1, 3.8, 2.6, 0). Returns HT, TTC, and tax amount. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in CHF |
| rate | string | no | VAT rate: 2.6% (reduced), 3.8% (hotel), 8.1% (standard) |
| mode | string | no | Input mode: ht=before tax, ttc=after tax |
Calculate Swiss occupational pension (LPP / 2e pilier) contributions by age bracket. Returns: {eligible, note}. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_annual | number | yes | Annual gross salary in CHF |
| age | integer | yes | Age of employee |
Calculate Swiss pillar 3a tax savings (3e pilier lie). Returns: {annual_contribution, net_cost_after_saving, max_employee_2026, max_self_employed_2026}. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_contribution | number | yes | Annual contribution to pillar 3a in CHF (max 7056 for employees, 35280 for self-employed) |
| marginal_tax_rate | number | yes | Marginal income tax rate in % (federal + cantonal combined) |
Calculate Swiss wealth tax (impot sur la fortune) by canton. Returns: {net_wealth, tax_free_threshold, taxable_wealth, wealth_tax_rate_pct, annual_wealth_tax, note}. See list_bundles for related 'finance-suisse' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| net_wealth | number | yes | Net wealth in CHF (assets minus debts) |
| canton | string | no | Canton of residence |
Calculate Body Mass Index (BMI) and weight category. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Weight in kilograms |
| height_cm | number | yes | Height in centimeters |
Calculate Basal Metabolic Rate using Mifflin-St Jeor equation. Returns: {bmr_kcal}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Weight in kilograms |
| height_cm | number | yes | Height in centimeters |
| age | number | yes | Age in years |
| sex | string | yes | Biological sex |
Calculate Total Daily Energy Expenditure from BMR and activity level. Returns: {tdee_kcal}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bmr | number | yes | Basal Metabolic Rate in kcal |
| activity_level | string | yes | Activity level |
Estimate calories burned during physical activity using MET values. Returns: {calories_burned}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| activity | string | yes | Type of activity |
| duration_minutes | number | yes | Duration in minutes |
| weight_kg | number | yes | Body weight in kilograms |
Estimate maximum heart rate using standard or age-adjusted formulas. Returns: {max_heart_rate}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| age | number | yes | Age in years |
| formula | string | no | Formula: standard (220-age), tanaka (men), gulati (women) |
Calculate heart rate training zones Z1-Z5, optionally using Karvonen method. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| max_hr | number | yes | Maximum heart rate in bpm |
| resting_hr | number | no | Resting heart rate for Karvonen method (bpm) |
Estimate ideal body weight using Lorentz and Devine formulas. Returns: {lorentz_kg, devine_kg, average_kg}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| height_cm | number | yes | Height in centimeters |
| sex | string | yes | Biological sex |
Estimate body fat percentage from BMI, age and sex using Deurenberg equation. Returns: {body_fat_pct}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bmi | number | yes | Body Mass Index |
| age | number | yes | Age in years |
| sex | string | yes | Biological sex |
Compute recommended daily fluid intake by weight, activity, and weather. Use for athletes and outdoor workers. Inputs: weight kg, activity hours, temperature °C. Returns L/day and electrolyte recommendation. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Body weight in kilograms |
| activity_minutes | number | no | Daily exercise duration in minutes |
| climate | string | no | Climate/environment |
Estimate 1 repetition maximum from submaximal lift using Epley, Brzycki and Lombardi formulas. Returns: {epley_1rm, brzycki_1rm, lombardi_1rm, average_1rm}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_lifted | number | yes | Weight lifted in kg or lbs |
| reps | number | yes | Number of repetitions performed |
Calculate estimated due date using Naegele's rule and return trimester milestone dates
| Parameter | Type | Required | Notes |
|---|---|---|---|
| last_period_date | string | yes | YYYY-MM-DD — First day of last menstrual period |
Calculate ovulation date and fertile window from last period and cycle length. Returns: {lmp, ovulation_date, fertile_window_start, fertile_window_end, next_period}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| last_period_date | string | yes | YYYY-MM-DD — First day of last menstrual period |
| cycle_length | number | no | Menstrual cycle length in days |
Estimate blood alcohol content (BAC) using Widmark formula. Returns: {bac_percent, legal_status_fr, estimated_sober_in_hours}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| drinks | number | yes | Number of standard drinks (1 drink = 14g pure alcohol) |
| weight_kg | number | yes | Body weight in kilograms |
| sex | string | yes | Biological sex |
| hours_drinking | number | yes | Hours elapsed since first drink |
Calculate recommended daily protein intake based on weight and fitness goal. Returns: {rate_g_per_kg, daily_protein_g, calories_from_protein}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Body weight in kilograms |
| goal | string | yes | Fitness goal |
Calculate waist-to-hip ratio and cardiovascular risk level. Returns: {risk_threshold, cardiovascular_risk}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| waist_cm | number | yes | Waist circumference in centimeters |
| hip_cm | number | yes | Hip circumference in centimeters |
| sex | string | yes | Biological sex |
Calculate running pace (min/km) and speed (km/h) from distance and time. Returns: {pace_min_per_km, pace_formatted}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| distance_km | number | yes | Distance in kilometers |
| time_minutes | number | yes | Total time in minutes |
Compute VMA (Maximal Aerobic Speed) from a fitness test result. Use for runners building training plans. Inputs: test type (Cooper 12-min, Luc Léger), result. Returns VMA km/h and zones. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| test | string | yes | Test type: cooper (12min run), demi_cooper (6min run), vameval (final speed km/h) |
| result_value | number | yes | Distance in meters (cooper/demi_cooper) or final speed in km/h (vameval) |
Estimate VO2max from VMA (maximal aerobic speed). Use for runners assessing cardio fitness. Formula: VO2max ≈ VMA × 3.5. Inputs: VMA in km/h. Returns VO2max in mL/kg/min and fitness category. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| vma | number | yes | VMA in km/h |
Predict race time for a target distance using Riegel formula. Returns: {predicted_time_minutes, predicted_formatted, predicted_pace_min_km}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| reference_distance_km | number | yes | Reference race distance in km |
| reference_time_minutes | number | yes | Reference race time in minutes |
| target_distance_km | number | yes | Target race distance in km |
Solve speed/distance/time — provide any 2 of 3 values to compute the missing one. Returns: {error}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| speed | number | no | Speed in km/h |
| distance | number | no | Distance in kilometers |
| time_minutes | number | no | Time in minutes |
Estimate cycling power output considering gradient, speed and total mass. Returns: {power_watts, watts_per_kg}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Rider weight in kilograms |
| bike_weight_kg | number | no | Bike weight in kilograms |
| gradient_pct | number | yes | Road gradient in percent (positive = uphill) |
| speed_kmh | number | yes | Speed in km/h |
Calculate swimming pace per 100m and SWOLF efficiency estimate. Returns: {pace_per_100m_min, pace_formatted, swolf_estimate}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| distance_m | number | yes | Distance swum in meters |
| time_minutes | number | yes | Total swim time in minutes |
Calculate 6 running training zones as speed ranges based on VMA. Returns: {vma_kmh}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| vma | number | yes | VMA (Maximal Aerobic Speed) in km/h |
Generate target split times for a marathon, half-marathon, or other race. Use for race-day pacing. Inputs: target finish time, distance km. Returns 5K splits, halfway, and final pace. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| target_time_minutes | number | yes | Target marathon finish time in minutes |
Calculate bicycle development in meters per pedal revolution. Returns: {gear_ratio, development_m, speed_at_90rpm_kmh}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chainring_teeth | number | yes | Number of teeth on the front chainring |
| cog_teeth | number | yes | Number of teeth on the rear cog/sprocket |
| wheel_circumference_mm | number | no | Wheel circumference in mm (700c road default = 2105mm) |
Compute cycling gear ratio (braquet) and development per pedal turn. Use for road cycling gear analysis. Inputs: chainring teeth, sprocket teeth, wheel diameter mm. Returns ratio and meters per pedal turn. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| chainring_teeth | number | yes | Number of teeth on the front chainring |
| cog_teeth | number | yes | Number of teeth on the rear cog |
Generate a full 1RM-to-12RM repetition table from a known lift using Epley formula. Returns: {input_weight, input_reps, estimated_1rm}. See list_bundles for related 'sport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight | number | yes | Weight lifted in kg or lbs |
| reps | number | yes | Repetitions performed at that weight |
Calculate days, weeks, approximate months and working days between two dates. Returns: {weeks, months_approx, working_days}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| start_date | string | yes | YYYY-MM-DD — Start date |
| end_date | string | yes | YYYY-MM-DD — End date |
Count working days Mon-Fri between two dates with optional French public holiday exclusion. Returns: {working_days, public_holidays_excluded}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| start_date | string | yes | YYYY-MM-DD — Start date |
| end_date | string | yes | YYYY-MM-DD — End date |
| country | string | no | Country for public holidays (FR supported) |
Add two time durations and return the total in hours and minutes. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hours1 | number | yes | First duration — hours |
| minutes1 | number | yes | First duration — minutes |
| hours2 | number | yes | Second duration — hours |
| minutes2 | number | yes | Second duration — minutes |
Calculate French overtime pay: first 8h at +25%, beyond 8h at +50% (weekly threshold 35h). Returns: {hours_at_25pct, hours_at_50pct, pay_25pct_zone, pay_50pct_zone, total_overtime_pay, extra_vs_normal}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| base_hourly_rate | number | yes | Normal hourly rate in euros |
| overtime_hours | number | yes | Total overtime hours worked beyond 35h/week |
Calculate night shift pay (21h-6h) with configurable premium percentage. Returns: {night_hourly_rate, total_pay, premium_earned}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| base_hourly_rate | number | yes | Normal hourly rate in euros |
| night_hours | number | yes | Number of night hours worked (21h-6h) |
| premium_pct | number | no | Night shift premium percentage (default 25%) |
Calculate exact age in years, months and days from a birth date. Returns: {today, age_years, age_months, age_days, total_days_lived, days_to_next_birthday}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_date | string | yes | YYYY-MM-DD — Date of birth |
Compute current UTC offset for a timezone, accounting for DST. Use for scheduling and date math. Inputs: timezone (IANA name). Returns UTC offset and DST status. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| from_zone | string | yes | Source time zone |
| to_zone | string | yes | Target time zone |
Calculate part-time work percentage and optional pro-rata salary. Returns: {percentage, prorata_salary}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| full_time_hours | number | no | Full-time weekly hours (FR default 35h) |
| part_time_hours | number | yes | Part-time weekly hours |
| full_salary | number | no | Full-time salary to pro-rate (optional) |
Estimate retirement date from birth date and country legal retirement age. Returns: {retirement_age, retirement_date, years_remaining, already_retired, note}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| birth_date | string | yes | YYYY-MM-DD — Date of birth |
| country | string | yes | Country: FR=64 years, US=67 years, UK=66 years |
Calculate French paid leave (congés payés): 2.5 days/month, max 25 working days/year. Returns: {accrual_per_month, accrued_days, capped_at_max, max_annual_days, days_to_max, months_to_max}. See list_bundles for related 'temps-rh' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| start_date | string | yes | YYYY-MM-DD — Employment start date |
| months_worked | number | yes | Months worked in the reference period (1-12) |
Calculate total floor area and Carrez habitable area from a list of rooms. Returns: {rooms, total_area_m2, carrez_area_m2, note}. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rooms | array | yes | Rooms with length and width in meters |
Calculate roof surface area from building footprint and slope angle. Returns: {rafter_length_m, net_roof_area_m2, with_5pct_overhang_m2}. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| base_length_m | number | yes | Building length in meters |
| base_width_m | number | yes | Building width in meters |
| slope_degrees | number | yes | Roof slope in degrees |
Calculate plaster volume and weight for a given surface and thickness. Returns: {area_m2, volume_m3, weight_kg, bags_25kg}. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Surface area in m² |
| thickness_mm | number | no | Thickness in mm (default 13) |
Calculate max bending moment and shear for a beam under uniform distributed load. Returns: {load_kN_per_m, max_moment_kNm, max_shear_kN, note}. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| span_m | number | yes | Beam span in meters |
| load_kg_per_m | number | yes | Distributed load in kg/m |
| beam_type | string | no | Support type |
Compute excavation volume (m³) and truck loads needed for a foundation, pool, or trench. Use for construction. Inputs: length, width, depth (m), bulking factor. Returns m³ to remove and 8m³-truck count. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Length in meters |
| width_m | number | yes | Width in meters |
| depth_m | number | yes | Depth in meters |
| soil_type | string | no | Soil type (swell: normal=1.25, rocky=1.50, clay=1.30) |
Calculate kinetic (½mv²), potential (mgh), mass-energy (E=mc²), or work (F·d). Returns: {energy_joules, energy_kj, energy_kwh}. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| type | string | yes | Energy type |
| mass_kg | number | no | Mass in kg |
| velocity_ms | number | no | Velocity m/s (kinetic) |
| height_m | number | no | Height m (potential) |
| force_n | number | no | Force N (work) |
| distance_m | number | no | Distance m (work) |
Solve PV=nRT. Provide any 3 of: pressure_pa, volume_m3, moles, temperature_k. R=8.314. Returns: {error}. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| pressure_pa | number | no | Pressure in Pa |
| volume_m3 | number | no | Volume in m³ |
| moles | number | no | Amount in mol |
| temperature_k | number | no | Temperature in K |
Solve c=λ·f for EM waves. Provide wavelength or frequency. Also returns photon energy E=hf. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| wavelength_m | number | no | Wavelength in meters |
| frequency_hz | number | no | Frequency in Hz |
Calculate cable section from power, voltage, distance and max voltage drop. Returns: {current_a, allowed_drop_v, calculated_section_mm2, recommended_mm2}. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| power_w | number | yes | Power in watts |
| voltage | number | no | Voltage (default 230V) |
| distance_m | number | yes | One-way cable distance in meters |
| max_drop_pct | number | no | Max voltage drop % (default 3) |
Calculate thermal R-value: R = thickness/lambda. Compare with RE2020 targets. Returns: {lambda_w_mk, r_value_m2KW, re2020_targets, walls_ok, roof_ok, floor_ok}. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| thickness_mm | number | yes | Insulation thickness in mm |
| lambda | number | yes | Conductivity W/(m·K) — mineral wool ~0.035, polyurethane ~0.025 |
Calculate car residual value: Y1:-25%, Y2:-15%, Y3:-10%, Y4-5:-8%, Y6+:-5%. Returns: {residual_value, total_dep, pct_lost}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Original price |
| age_years | number | yes | Age in years |
Calculate fuel consumption in L/100km and MPG from distance and fuel used. Returns: {l_100km, mpg_us, mpg_uk, co2_g_km_petrol}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| distance_km | number | yes | Distance in km |
| fuel_liters | number | yes | Fuel consumed in liters |
French ecological malus 2026: CO2 g/km based tax on new vehicle registration. Returns: {malus_eur, threshold, max}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| co2_g_km | number | yes | CO2 emissions in g/km |
French fiscal horsepower CV = (CO2/45) + (P_kW/40)^1.6. Returns: {cv_raw, cv_fiscaux}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| co2_g_km | number | yes | CO2 g/km |
| power_kw | number | yes | Engine power in kW |
Estimate annual car insurance from vehicle value, driver age and bonus-malus. Returns: {annual_premium_eur, monthly_eur, note}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| vehicle_value | number | yes | Vehicle value EUR |
| driver_age | number | yes | Driver age |
| bonus_malus_coefficient | number | no | Bonus-malus (0.5=best, 3.5=worst) |
Compute water bill from cubic meters consumed and tariff bands. Use for household budget. Inputs: m³ consumed, fixed fee, variable rate. Returns total bill. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cubic_meters | number | yes | Water consumption in m³ |
| price_per_m3 | number | no | Price per m³ (default 4.34 EUR — France 2026) |
Compare salaries across countries using PPP (FR=0.79, US=1.0, UK=0.81, DE=0.77, CH=1.36, BE=0.80). Returns: {ppp_from, ppp_to, equivalent, ratio}. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| salary | number | yes | Salary in local currency |
| from_country | string | yes | Source country |
| to_country | string | yes | Target country |
Estimate shipping cost from weight, distance and service (standard vs express). Returns: {cost_eur, formula, note}. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Package weight kg |
| distance_km | number | yes | Delivery distance km |
| type | string | no | Service level |
Calculate weekly and annual laundry cost (electricity + water + detergent). Returns: {per_load_eur, weekly_eur, annual_eur}. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| loads_per_week | number | yes | Loads per week |
| electricity_kwh_per_load | number | no | kWh per load (default 1.2) |
| water_liters_per_load | number | no | Liters per load (default 50) |
| detergent_cost_per_load | number | no | Detergent EUR/load (default 0.30) |
Compare unit prices of grocery items — normalizes g→kg, mL/cL→L. Returns: {best_value, savings_vs_priciest}. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| items | array | yes | Items: name, price, quantity, unit (kg/g/L/mL/cl/unit) |
Calculate safe following distance using the 2-second rule (French highway code). Returns: {safety_distance_2s_m, highway_3s_m, note}. See list_bundles for related 'auto-transport' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| speed_kmh | number | yes | Vehicle speed in km/h |
Compute total calories, protein, carbs, fat for a recipe and per serving. Use for meal planning or nutrition labels. Inputs: list of ingredients with grams, servings count. Returns macro breakdown per serving and total. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| ingredients | array | yes | — |
Convert baking measurements between cups, tablespoons, grams, and milliliters for common ingredients. Use for translating recipes across regions. Inputs: ingredient, value, from-unit, to-unit. Returns converted quantity. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| ingredient | string | yes | — |
| quantity_cups | number | yes | — |
Estimate cooking time for meat, fish, or vegetables based on weight, method, and doneness. Use for kitchen planning. Inputs: food type, weight g, cooking method (oven/grill/sous-vide), doneness. Returns time min and target internal temp. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| food | string | yes | — |
| weight_kg | number | yes | — |
| method | string | yes | — |
Return maximum recommended freezer storage duration for a food type. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| food_type | string | yes | — |
Track caffeine intake against the safe daily limit (400 mg adult). Use for monitoring coffee/tea/soda consumption. Inputs: list of drinks (type, quantity). Returns total mg, % of limit, time-of-day distribution. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| drinks | array | yes | — |
Compute alcohol units (UK) and grams of pure alcohol in a drink. Use for health tracking and limit awareness. Inputs: volume mL, ABV %. Returns UK units, grams of pure alcohol, and standard-drink equivalent. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| drinks | array | yes | — |
Compute food cost per serving from ingredient costs. Use for restaurants, meal-prep services. Inputs: list of ingredients with cost and quantity used, servings. Returns cost per serving and total. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| ingredients | array | yes | — |
| servings | integer | yes | — |
Check daily vitamin and mineral intake against RDA recommendations. Use for nutrition tracking. Inputs: list of foods with quantities. Returns % RDA per nutrient and deficiencies. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| age | integer | yes | — |
| sex | string | yes | — |
Calculate glycemic load (GL) per food and total for a meal. Returns: {thresholds}. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| foods | array | yes | — |
Calculate water hardness in French degrees from calcium and magnesium concentrations. Returns: {thresholds}. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| calcium_mg_l | number | yes | — |
| magnesium_mg_l | number | yes | — |
Calculate daily dog food quantity based on weight, age and activity level. Returns: {kcal_per_day}. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | — |
| age | string | yes | — |
| activity | string | yes | — |
Calculate daily cat food quantity based on weight, age and lifestyle. Returns: {kcal_per_day}. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | — |
| age | string | yes | — |
| indoor | boolean | no | — |
Convert pet age (dog/cat) to human-equivalent years. Use for pet health monitoring. Inputs: animal type, age years, breed size. Returns human-equivalent age. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| animal | string | yes | — |
| age_years | number | yes | — |
| size | string | no | — |
Compute aquarium water volume in L and US gallons. Use for fishkeeping, dosing, and stocking decisions. Inputs: shape (rectangular/cylindrical/bow-front), L×W×H or radius×height in cm. Returns liters and gallons. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_cm | number | yes | — |
| width_cm | number | yes | — |
| height_cm | number | yes | — |
| substrate_cm | number | no | — |
Compute veterinary medication dose by pet weight (mg/kg). Use for medication administration. Inputs: weight kg, dose mg/kg. Returns total mg and tablet count. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | — |
| dose_mg_per_kg | number | yes | — |
| concentration_mg_per_ml | number | no | — |
Compute due date for animal breeding given mating date and species gestation period. Use for breeders. Inputs: species (dog/cat/horse/rabbit/cow), mating date. Returns due date and gestation milestones. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| animal | string | yes | — |
| mating_date | string | yes | — |
Estimate body condition score proxy (BMI) for dogs and cats. Returns: {thresholds}. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| animal | string | yes | — |
| weight_kg | number | yes | — |
| body_length_cm | number | yes | — |
Compute calories burned by dog and human during a walk. Use for pet weight management. Inputs: dog weight, walk duration, pace. Returns calories burned by both. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| walker_weight_kg | number | yes | — |
| dog_weight_kg | number | yes | — |
| duration_min | number | yes | — |
| pace | string | yes | — |
Calculate fabric needed for a garment in meters (includes 10% for pattern matching). Returns: {meters_needed, note}. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| garment | string | yes | — |
| size | string | yes | — |
Calculate yarn needed for a knitting project (meters and number of 50g/100m balls). Returns: {meters_of_yarn, balls_50g_100m}. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| project | string | yes | — |
| size | string | yes | — |
Find ring size in EU/US/UK/JP given finger circumference or diameter. Use for jewelry shopping. Inputs: circumference mm or diameter mm. Returns size in EU, US, UK, JP systems. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| circumference_mm | number | yes | — |
| from_system | string | yes | — |
Calculate bra size in FR, US or UK system from underbust and bust measurements (cm). Returns: {band_size, size, cup_diff_cm}. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| underbust_cm | number | yes | — |
| bust_cm | number | yes | — |
| system | string | yes | — |
Calculate hat size in FR/EU, US/UK systems and standard S/M/L/XL from head circumference (cm). Returns: {head_circumference_cm, FR_EU, US_UK, standard_size}. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| head_circumference_cm | number | yes | — |
Approximate sunrise and sunset times based on latitude and day of year. Returns: {sunrise_solar_time, sunset_solar_time, day_length_hours}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| latitude | number | yes | Latitude in degrees |
| day_of_year | integer | yes | Day of year (1-365) |
Compute current moon phase and illumination % for any date. Use for astronomy, agriculture, fishing. Inputs: date. Returns phase name, illumination %, age in days. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| date | string | yes | Date in YYYY-MM-DD format |
Calculate the distance to the horizon from a given height. Returns: {distance_km, distance_miles, distance_nautical_miles}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| height_m | number | yes | Observer height above ground in metres |
Estimate solar panel daily and yearly energy output by location and system size. Use for solar installation sizing. Inputs: kW capacity, latitude, panel orientation, shading %. Returns kWh/day and kWh/year. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| panel_watt_peak | number | yes | Total peak power of the installation in Watts (Wp) |
| area_m2 | number | no | Panel surface area in m2 (optional, informational) |
| hours_sun_per_day | number | no | Average peak sun hours per day (default 4) |
| efficiency_loss_pct | number | no | System efficiency loss percentage (default 15%) |
Estimate annual rainwater collection volume from a roof. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| roof_area_m2 | number | yes | Roof catchment area in square metres |
| annual_rainfall_mm | number | yes | Average annual rainfall in millimetres |
| efficiency_pct | number | no | Collection efficiency percentage (default 80%) |
Calculate the perceived wind chill temperature (Environment Canada formula). Returns: {feels_colder_by_degrees}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| temperature_c | number | yes | Air temperature in degrees C (must be 10C or below) |
| wind_speed_kmh | number | yes | Wind speed in km/h |
Calculate the apparent temperature (heat index) from temperature and humidity. Returns: {heat_index_c, feels_warmer_by_degrees, risk_level}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| temperature_c | number | yes | Air temperature in degrees C |
| humidity_pct | number | yes | Relative humidity in percent |
Estimate CO2 sequestration by trees over their lifetime. Returns: {age_factor, annual_kg_co2_per_tree, annual_kg_co2_total, lifetime_kg_co2, lifetime_tonnes_co2, equivalent_cars_off_road_1yr}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| tree_type | string | yes | Species of tree |
| age_years | integer | yes | Age of the trees in years |
| count | integer | no | Number of trees (default 1) |
Calculate total luggage weight and compare to airline limits (carry-on, economy checked, business checked). Returns: {total_kg, status}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| items | array | yes | Array of luggage items with name and weight in kg |
Estimate jet lag recovery time based on timezone difference and direction of travel. Returns: {direction, tips}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| timezone_diff_hours | number | yes | Timezone difference in hours (positive = eastward, negative = westward) |
Estimate total trip budget by category (transport, accommodation, food, activities). Use for trip planning. Inputs: destination, days, traveler count, comfort level. Returns total and per-day breakdown. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| destination | string | yes | Destination region |
| days | integer | yes | Number of travel days |
| travelers | integer | yes | Number of travelers |
Determine voltage adapter and plug type needed for a destination country. Use for international travel with electronics. Inputs: home country, destination, device wattage. Returns adapter type, voltage, plug shape. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| from_country | string | yes | Country of origin |
| to_country | string | yes | Destination country |
Calculate safe sun exposure time based on UV index and Fitzpatrick skin type. Returns: {skin_description, safe_exposure_minutes, with_spf30_minutes, uv_risk_level, recommendations}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| uv_index | number | yes | UV index at destination (1–11+) |
| skin_type | string | yes | Fitzpatrick skin type: 1=very fair, 6=very dark |
Assess altitude sickness risk and recommend acclimatization schedule. Returns: {risk_level, risk_color, recommended_acclimatization_days, symptoms_to_watch, recommendations}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| altitude_m | number | yes | Target altitude in meters |
Calculate currency exchange with bank margin and show fees lost. Returns: {amount_source, from_rate_vs_usd, to_rate_vs_usd, mid_market_amount, amount_after_margin, fees_lost, ...}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount to exchange in source currency |
| from_rate | number | yes | Source currency rate vs USD (e.g. EUR=1.08) |
| to_rate | number | yes | Target currency rate vs USD (e.g. JPY=150) |
| bank_margin_pct | number | no | Bank/exchange margin percentage (default 2.5%) |
Estimate international shipping cost and delivery time by carrier and weight. Use for e-commerce or expat shipping. Inputs: from-country, to-country, weight kg, dimensions. Returns cost range and lead time. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Actual parcel weight in kg |
| dimensions_cm | object | yes | Parcel dimensions in cm (length, width, height) |
| from_zone | string | yes | Destination zone |
Compute the difference between two times or dates in seconds, minutes, hours, days. Use for project tracking, age, or scheduling. Inputs: start datetime, end datetime. Returns delta in multiple units. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| city1 | string | yes | First city |
| city2 | string | yes | Second city |
Calculate estimated travel insurance cost based on destination, duration, age and activities. Returns: {base_per_day_eur, activity_factor, estimated_premium_eur, coverage_tips}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| destination | string | yes | Travel destination zone |
| duration_days | integer | yes | Trip duration in days |
| age | integer | yes | Traveler age in years |
| activities | string | yes | Activity level: standard (city/beach), adventure (hiking/skiing), extreme (mountaineering/motorsport) |
Calculate gross and net rental yield for a real estate investment. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Purchase price in EUR |
| annual_rent | number | yes | Annual rental income in EUR |
| annual_charges | number | no | Annual charges/expenses in EUR (default 0) |
Compute French Pinel rental investment tax reduction (rates 2026). Use to evaluate Pinel real estate investment savings. Inputs: investment amount, duration (6/9/12y). Returns total tax reduction and yearly amount. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| investment | number | yes | Investment amount in EUR (max 300,000) |
| duration | string | yes | Rental commitment duration in years: 6, 9 or 12 |
Calculate LMNP (non-professional furnished rental) tax deficit. Returns: {total_deductible, deficit, note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_rent | number | yes | Annual rental income in EUR |
| annual_charges | number | yes | Annual deductible charges in EUR |
| depreciation_annual | number | yes | Annual depreciation amount in EUR |
Compute French taxe foncière (annual property tax). Use for owners of property in France. Inputs: cadastral rental value (valeur locative), commune rate %. Returns annual tax due. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cadastral_value | number | yes | Cadastral rental value (valeur locative cadastrale) in EUR |
| commune_rate_pct | number | no | Commune tax rate in % (default 25) |
Calculate French real estate agency fees using sliding scale. Returns: {agency_fees, scale}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sale_price | number | yes | Property sale price in EUR |
Calculate mortgage insurance (assurance emprunteur) cost. Returns: {monthly_insurance, annual_insurance, total_insurance}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| loan_amount | number | yes | Loan amount in EUR |
| rate_pct | number | no | Annual insurance rate in % of loan (default 0.36) |
| duration_years | number | yes | Loan duration in years |
Calculate maximum loan capacity using French HCSF 35% debt ratio rule. Returns: {max_monthly_payment, max_loan, note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_income | number | yes | Net monthly income in EUR |
| existing_debts | number | no | Existing monthly debt payments in EUR (default 0) |
| rate | number | no | Annual interest rate in % (default 3.5) |
| duration_years | number | no | Loan duration in years (default 25) |
Check French PTZ (zero-rate loan) eligibility and maximum amount. Returns: {income_ceiling, ptz_max_pct_of_operation, note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| household_income | number | yes | Annual household income (revenu fiscal de reference) in EUR |
| household_size | integer | yes | Number of people in household (1-5+) |
| zone | string | yes | Geographic zone of the property |
Compute UK Stamp Duty Land Tax (SDLT). Use for UK home buyers. Inputs: property price, first-time-buyer flag, second-home flag. Returns SDLT due and effective rate. See list_bundles for related 'finance-uk' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| price | number | yes | Property purchase price in GBP |
| first_time_buyer | boolean | no | Whether buyer is a first-time buyer (default false) |
Compute net rental profitability after taxes and charges. Use for real estate investment analysis. Inputs: purchase price, monthly rent, charges, vacancy %, tax bracket. Returns net yield % and cash flow. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Purchase price in EUR |
| notary_fees_pct | number | no | Notary fees as % of price (default 8) |
| monthly_rent | number | yes | Monthly rental income in EUR |
| monthly_charges | number | yes | Monthly charges/expenses in EUR |
| annual_tax | number | yes | Annual property tax in EUR |
Calculate Carrez law surface area (French legal measurement). Returns: {carrez_surface_m2, total_surface_m2, excluded_m2, included_rooms, excluded_rooms, note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rooms | array | yes | List of rooms with area and ceiling height |
Determine French DPE energy class from primary energy consumption. Returns: {note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| kwh_m2_year | number | yes | Primary energy consumption in kWh/m2/year |
Compute property transfer tax (FR droits de mutation on existing property at the common 5.00% departmental rate, BE, US, UK, DE). Use for property buyers. Inputs: property price, country. Returns tax due and effective rate. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| price | number | yes | Property price in local currency |
| country | string | yes | Country code: FR/BE/US/UK/DE |
Estimate detailed moving cost based on volume, distance and floor. Returns: {base_cost, total_cost_eur, note}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| volume_m3 | number | yes | Volume of goods to move in m3 |
| distance_km | number | yes | Moving distance in km |
| floor | integer | no | Floor number (default 0 = ground floor) |
| elevator | boolean | no | Whether elevator is available (default true) |
Compare multiple mortgage offers sorted by total cost. Returns: {offers_count, best_offer, comparison}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| loan_amount | number | yes | Loan amount in EUR |
| offers | array | yes | List of mortgage offers to compare |
Compute weekly water needs for a garden by area and plant type. Use for irrigation planning. Inputs: garden m², climate, plant mix. Returns L/week and watering frequency. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| surface_m2 | number | yes | Garden surface area in square meters |
| plant_type | string | yes | Type of plants in the garden |
| season | string | yes | Current season |
Calculate NPK fertilizer quantities needed based on crop type and soil type. Returns: {total_kg}. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| surface_m2 | number | yes | Surface area in square meters |
| crop_type | string | yes | Type of crop to fertilize |
| soil_type | string | yes | Type of soil |
Calculate the number of seeds needed based on surface area, spacing and germination rate. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| surface_m2 | number | yes | Surface area in square meters |
| row_spacing_cm | number | yes | Distance between rows in centimeters |
| plant_spacing_cm | number | yes | Distance between plants in a row in centimeters |
| germination_rate_pct | number | no | Germination rate in percent (default 85%) |
Compute compost volume produced from kitchen and garden waste over a year. Use for compost bin sizing. Inputs: household size, garden size m². Returns L/year and recommended bin volume. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| surface_m2 | number | yes | Surface area in square meters |
| depth_cm | number | no | Compost layer depth in centimeters (default 5cm) |
Estimate effective daily sunlight hours for a garden based on latitude, month and orientation. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| latitude | number | yes | Latitude in degrees (-90 to 90) |
| month | number | yes | Month number (1=January, 12=December) |
| orientation | string | yes | Garden orientation / aspect |
Calculate recommended lawn mowing interval based on grass type, season and rainfall. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| grass_type | string | yes | Type of grass: cool_season (fescue/rye), warm_season (bermuda/zoysia), or mixed |
| season | string | yes | Current season |
| weekly_rainfall_mm | number | no | Average weekly rainfall in mm (default 25mm) |
Estimate harvest date for vegetables based on sowing date and region. Returns: {harvest_date, days_to_harvest}. See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| plant_type | string | yes | Type of vegetable |
| sowing_date | string | yes | Sowing date in ISO format (YYYY-MM-DD) |
| region | string | yes | Growing region: north (+10 days), south (-10 days), mediterranean (-15 days) |
Compute soil volume needed to fill a raised garden bed. Use for gardening setup. Inputs: length, width, depth (m). Returns soil m³, bag count, mix recommendation (40% compost / 30% topsoil / 30% sand). See list_bundles for related 'jardinage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Raised bed length in meters |
| width_m | number | yes | Raised bed width in meters |
| depth_cm | number | no | Raised bed depth in centimeters (default 30cm) |
Calculate depth of field, near/far focus limits and hyperfocal distance for a camera lens. Returns: {near_limit_m, far_limit_m, coc_mm}. See list_bundles for related 'photographie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| focal_length_mm | number | yes | Lens focal length in millimeters |
| aperture | number | yes | Lens aperture (f-number, e.g. 2.8) |
| distance_m | number | yes | Subject distance in meters |
| sensor_width_mm | number | no | Camera sensor width in mm (default 36 for full frame) |
Calculate the missing exposure value (aperture, shutter speed or ISO) given the other two. Returns: {ev_value, lv_value, shutter_speed_s}. See list_bundles for related 'photographie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| iso | number | yes | ISO sensitivity value |
| aperture | number | yes | Aperture f-number |
| shutter_speed | number | yes | Shutter speed in seconds (e.g. 0.004 for 1/250s) |
Calculate hyperfocal distance and near/far sharp limits for a lens and aperture. See list_bundles for related 'photographie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| focal_length_mm | number | yes | Lens focal length in millimeters |
| aperture | number | yes | Aperture f-number |
| coc_mm | number | no | Circle of confusion in mm (default 0.03 for full frame) |
Calculate camera crop factor and equivalent focal length based on sensor width. See list_bundles for related 'photographie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sensor_width_mm | number | yes | Camera sensor width in millimeters (full frame = 36mm) |
Calculate print DPI quality and maximum print size from image pixel dimensions. Returns: {effective_dpi}. See list_bundles for related 'photographie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| image_width_px | number | yes | Image width in pixels |
| image_height_px | number | yes | Image height in pixels |
| print_width_cm | number | yes | Desired print width in centimeters |
| print_height_cm | number | yes | Desired print height in centimeters |
Convert BPM tempo to millisecond delay times for different note values. See list_bundles for related 'musique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bpm | number | yes | Tempo in beats per minute |
| note_value | string | yes | Musical note value to convert |
Calculate the frequency of a musical note based on equal temperament tuning. See list_bundles for related 'musique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| note | string | yes | Note name in chromatic scale |
| octave | number | yes | Octave number (A4 = concert pitch reference) |
| tuning_reference | number | no | Tuning reference frequency in Hz (default A4=440Hz) |
Calculate total beats and duration for a musical passage in bars. Returns: {time_signature}. See list_bundles for related 'musique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bpm | number | yes | Tempo in beats per minute |
| bars | number | yes | Number of bars |
| beats_per_bar | number | no | Number of beats per bar (numerator of time signature) |
| beat_value | number | no | Note value of one beat (denominator of time signature, e.g. 4 for quarter note) |
Calculate optimal reverb pre-delay based on room size and musical tempo. See list_bundles for related 'musique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| room_length_m | number | yes | Room length in meters |
| bpm | number | no | Tempo in BPM (used to snap pre-delay to musical grid) |
Calculate guitar or bass string tension in pounds, kilograms and Newtons. See list_bundles for related 'musique' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| scale_length_inches | number | yes | Instrument scale length in inches (e.g. 25.5 for Fender Stratocaster) |
| frequency_hz | number | yes | Target tuning frequency in Hz (e.g. 329.63 for E4) |
| gauge_inches | number | yes | String gauge in inches (e.g. 0.010 for a light gauge high E) |
Compute crypto trading profit/loss including fees. Use for crypto investors tracking realized P&L. Inputs: buy price, sell price, quantity, buy fee, sell fee. Returns net P&L, ROI %, break-even price. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| buy_price | number | yes | Purchase price per unit in fiat currency |
| sell_price | number | yes | Sale price per unit in fiat currency |
| quantity | number | yes | Quantity of cryptocurrency traded |
| buy_fee_pct | number | no | Buy transaction fee percentage (default 0.1%) |
| sell_fee_pct | number | no | Sell transaction fee percentage (default 0.1%) |
Compute crypto mining profitability after electricity costs. Use for miners evaluating ROI. Inputs: hashrate, power W, kWh price, network difficulty, coin price. Returns daily/monthly net profit. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hashrate_mhs | number | yes | Mining hashrate in MH/s |
| power_watts | number | yes | Mining hardware power consumption in watts |
| electricity_cost_kwh | number | yes | Electricity cost per kWh in fiat currency |
| block_reward | number | no | Block reward in coins (default 3.125 BTC post-halving) |
| network_difficulty | number | yes | Current network difficulty |
| coin_price_usd | number | yes | Current coin price in USD |
Calculate staking rewards with optional compounding for a given APY and duration. Returns: {initial_amount}. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Initial staking amount in coins or fiat |
| apy_pct | number | yes | Annual Percentage Yield in percent |
| duration_days | number | yes | Staking duration in days |
| compounding | string | yes | Compounding frequency |
Calculate impermanent loss for a DeFi liquidity pool position when price ratio changes. Returns: {value_in_pool_ratio}. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| price_ratio_change | number | yes | Price ratio change multiplier (e.g. 2.0 if token doubled in price, 0.5 if halved) |
Calculate Ethereum transaction gas fee in ETH and USD. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gas_price_gwei | number | yes | Gas price in Gwei |
| gas_limit | number | no | Gas limit for the transaction (default 21000 for simple transfer) |
| eth_price_usd | number | no | Current ETH price in USD (default 3000) |
Calculate DCA portfolio value and performance for recurring crypto investments. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| investment_per_period | number | yes | Amount invested per period in fiat currency |
| periods | number | yes | Number of investment periods |
| average_price | number | yes | Average purchase price per unit over all periods |
| current_price | number | yes | Current market price per unit |
Calculate French flat tax (30% PFU) on cryptocurrency capital gains at withdrawal. Returns: {gain_ratio}. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| total_gains_eur | number | yes | Total unrealized gains in the portfolio in EUR |
| total_portfolio_value_eur | number | yes | Total current portfolio value in EUR |
| withdrawal_amount_eur | number | yes | Amount being withdrawn/sold in EUR |
Calculate portfolio allocation amounts by percentage for major crypto asset classes. Returns: {allocation_pct, sum_pct}. See list_bundles for related 'crypto' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| total_value | number | yes | Total portfolio value in fiat currency |
| btc_pct | number | no | Bitcoin allocation percentage (default 40%) |
| eth_pct | number | no | Ethereum allocation percentage (default 30%) |
| alts_pct | number | no | Altcoins allocation percentage (default 20%) |
| stablecoins_pct | number | no | Stablecoins allocation percentage (default 10%) |
Calculate dice roll probability for exact values, minimum or maximum targets. Returns: {probability}. See list_bundles for related 'jeux-probabilites' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| num_dice | number | yes | Number of dice to roll |
| num_sides | number | no | Number of sides on each die (default d6) |
| target | number | yes | Target value to calculate probability for |
| comparison | string | yes | Comparison type: exact match, at least target, or at most target |
Calculate hypergeometric probability of drawing specific cards from a deck. Returns: {odds_one_in}. See list_bundles for related 'jeux-probabilites' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| deck_size | number | no | Total number of cards in the deck (default 52) |
| cards_in_deck_matching | number | yes | Number of target cards in the deck |
| draw_count | number | yes | Number of cards drawn |
| target_cards | number | yes | Number of target cards wanted in the draw |
Compute the odds of winning a lottery for various prize tiers. Use for awareness, education. Inputs: numbers to pick, total numbers, bonus number config. Returns probability and 1-in-N for each tier. See list_bundles for related 'jeux-probabilites' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| numbers_to_pick | number | yes | How many numbers you pick |
| total_numbers | number | yes | Total numbers in the main pool |
| bonus_numbers | number | no | Number of bonus/powerball numbers to match (default 0) |
| bonus_pool | number | no | Size of the bonus number pool (default 0, no bonus) |
Compute probability of common poker hands (straight, flush, full house, etc.) given a starting hand. Use for poker strategy. Inputs: hole cards, community cards. Returns probability per hand category. See list_bundles for related 'jeux-probabilites' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hand_type | string | yes | Poker hand type to calculate probability for |
Calculate expected value and profitability of a bet or investment decision. Returns: {lose_probability}. See list_bundles for related 'jeux-probabilites' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| win_probability | number | yes | Probability of winning (0 to 1) |
| win_amount | number | yes | Net amount won if outcome is positive |
| loss_amount | number | yes | Net amount lost if outcome is negative |
| bet_cost | number | no | Upfront cost to enter the bet (default 0) |
Calculate water flow rate through a pipe using the Hazen-Williams formula. Returns: {C_coefficient}. See list_bundles for related 'plomberie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| diameter_mm | number | yes | Pipe internal diameter in millimeters |
| pressure_bar | number | no | Available water pressure in bar (default 3 bar) |
| length_m | number | yes | Pipe length in meters |
| material | string | yes | Pipe material (affects Hazen-Williams C coefficient) |
Calculate recommended water heater tank size for a household. See list_bundles for related 'plomberie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| household_size | number | yes | Number of people in the household |
| usage | string | yes | Water usage level: low (30L/person), normal (50L/person), high (70L/person) |
Calculate the minimum pipe diameter required for a given flow rate and maximum velocity. See list_bundles for related 'plomberie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| flow_rate_lpm | number | yes | Required flow rate in liters per minute |
| max_velocity_ms | number | no | Maximum water velocity in m/s (default 1.5 m/s per DTU norms) |
Compute required drain slope (% and cm/m) to ensure proper water flow per plumbing code. Use for plumbing or roof drainage. Inputs: pipe length, pipe diameter, application. Returns slope % and drop in cm. See list_bundles for related 'plomberie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| pipe_diameter_mm | number | no | Drain pipe diameter in millimeters (default 100mm) |
| fixture_type | string | yes | Type of sanitary fixture being drained |
Calculate water pressure loss in a pipe circuit including friction and elevation. Returns: {equiv_length_m}. See list_bundles for related 'plomberie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| pipe_length_m | number | yes | Pipe length in meters |
| diameter_mm | number | yes | Pipe internal diameter in millimeters |
| flow_rate_lpm | number | yes | Flow rate in liters per minute |
| elevation_change_m | number | no | Elevation change in meters (positive = uphill, negative = downhill) |
| fittings_count | number | no | Number of fittings and elbows (each adds ~0.5m equivalent length) |
Calculate LMNP rental property amortization and annual tax deduction (French tax regime). See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| property_value | number | yes | Property purchase price excluding land in EUR |
| furniture_value | number | yes | Furniture and equipment value in EUR |
| annual_rent | number | yes | Annual gross rental income in EUR |
Compare SCI taxation under IS (corporate tax) vs IR (income tax). Use for French real-estate investors choosing tax regime. Inputs: rental income, charges, owner tax bracket. Returns net result under each regime. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_rent | number | yes | Annual gross rental income in EUR |
| annual_charges | number | yes | Annual deductible charges in EUR (management fees, interest, maintenance) |
| marginal_tax_rate_pct | number | yes | Shareholder marginal income tax rate in percent (e.g. 30, 41, 45) |
| property_value | number | yes | Property value for amortization calculation under IS |
Calculate concrete stair dimensions, volume and materials using Blondel's formula. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| height_m | number | yes | Total stair height to climb in meters |
| num_steps | number | yes | Number of steps |
| width_m | number | no | Stair width in meters (default 0.9m) |
| thickness_cm | number | no | Slab thickness under each tread in cm (default 15cm) |
Calculate roof truss dimensions, rafter length and material quantities for a pitched roof. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| span_m | number | yes | Total roof span in meters (full width) |
| pitch_degrees | number | yes | Roof pitch angle in degrees |
| spacing_cm | number | no | Distance between trusses/rafters in cm (default 60cm) |
| load_kg_m2 | number | no | Total roof load in kg/m² including snow, wind and tiles (default 150) |
Calculate body fat percentage using the US Navy circumference method. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sex | string | yes | Biological sex |
| waist_cm | number | yes | Waist circumference in cm (at navel for males, narrowest for females) |
| neck_cm | number | yes | Neck circumference in cm (below larynx) |
| height_cm | number | yes | Height in centimeters |
| hip_cm | number | no | Hip circumference in cm (widest point, required for females) |
| weight_kg | number | no | Body weight in kg (default 70kg for fat mass calculation) |
Convert French school grades (out of 20) to GPA and academic mention. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| note_1 | number | yes | Grade 1 out of 20 |
| note_2 | number | yes | Grade 2 out of 20 |
| note_3 | number | no | Grade 3 out of 20 (optional) |
| note_4 | number | no | Grade 4 out of 20 (optional) |
| note_5 | number | no | Grade 5 out of 20 (optional) |
| coeff_1 | number | no | Coefficient for grade 1 |
| coeff_2 | number | no | Coefficient for grade 2 |
| coeff_3 | number | no | Coefficient for grade 3 (0 if unused) |
| coeff_4 | number | no | Coefficient for grade 4 (0 if unused) |
| coeff_5 | number | no | Coefficient for grade 5 (0 if unused) |
Estimate Parcoursup weighted score from French baccalaureate component grades. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bac_general_average | number | yes | General baccalauréat average out of 20 |
| specialite_1_average | number | yes | First speciality subject average out of 20 |
| specialite_2_average | number | yes | Second speciality subject average out of 20 |
| grand_oral_note | number | yes | Grand Oral examination grade out of 20 |
| controle_continu_average | number | yes | Continuous assessment (contrôle continu) average out of 20 |
Convert between fuel economy units: L/100km, mpg-US, mpg-UK, km/L. Use for car comparisons across regions. Inputs: value, from-unit, to-unit. Returns converted economy. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Fuel economy value to convert |
| from_unit | string | yes | Source unit of fuel economy |
| to_unit | string | yes | Target unit of fuel economy |
Universal AI-powered calculator — handles any calculation not covered by specialized tools. Requires premium subscription.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| query | string | yes | Calculation request in natural language (English or French) |
| context | string | no | Optional context: units, constraints, domain |
Calculate gross rental yield from property price and monthly rent. Returns: {gross_yield_pct}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Property purchase price in EUR |
| monthly_rent | number | yes | Monthly rent in EUR |
Calculate net rental yield after charges and vacancy. Returns: {net_yield_pct, effective_annual_rent, net_income}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Property price EUR |
| monthly_rent | number | yes | Monthly rent EUR |
| annual_charges | number | yes | Annual charges, taxes, insurance EUR |
| vacancy_rate | number | yes | Vacancy rate percent |
Estimate French taxe foncière from cadastral value and commune rate. Returns: {estimated_tax_eur, taxable_base, commune_rate_pct}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cadastral_value | number | yes | Valeur locative cadastrale EUR |
| commune_rate | number | yes | Commune tax rate percent |
Compute Loan-to-Value (LTV) ratio for mortgage risk. Use for mortgage application or PMI thresholds. Inputs: loan amount, property value. Returns LTV %, risk level, PMI required y/n. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| property_value | number | yes | Property value EUR |
| loan_amount | number | yes | Loan amount EUR |
Calculate debt-to-income ratio and maximum additional loan capacity. Returns: {ratio_pct, max_monthly_debt_35pct, max_additional_loan_payment, status}. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_income | number | yes | Net monthly income EUR |
| monthly_debts | number | yes | Existing monthly debt payments EUR |
Detailed breakdown of French notary fees by component (taxes, emoluments, debours). Use for property buyers in France. Inputs: property price, type (new/old). DMTO on old property = 6.32% (departmental 5.00% + communal 1.20% + 2.37% fee on the departmental part; 5.81% for first-time buyers of a main residence or departments at 4.50%). Returns total fees and per-component breakdown. See list_bundle
| Parameter | Type | Required | Notes |
|---|---|---|---|
| property_price | number | yes | Property price EUR |
| type | string | yes | Property type |
Calculate French property capital gains tax after holding-period abatements. Returns: {raw_gain_eur, taxable_ir_eur, taxable_ps_eur, tax_ir_eur, tax_ps_eur, total_tax_eur, ...}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| purchase_price | number | yes | Purchase price EUR |
| sale_price | number | yes | Sale price EUR |
| holding_years | number | yes | Years held |
Calculate rent increase allowed by French IRL index. Returns: {new_rent_eur, increase_eur}. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| current_rent | number | yes | Current rent EUR |
| old_irl | number | yes | IRL at lease start |
| new_irl | number | yes | Latest published IRL |
Compute one owner's share of condominium charges from the budget and tantièmes. Use for syndic or owner verification. Inputs: total budget, tantièmes-owned, total tantièmes. Returns annual and monthly share. See list_bundles for related 'immobilier' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| total_charges | number | yes | Total annual condominium charges EUR |
| ownership_share_pct | number | yes | Ownership share (tantièmes) percent |
Compute compound interest with monthly contributions (savings plan). Use for systematic savers. Inputs: initial amount, monthly contribution, annual rate %, years. Returns final value, total contributed, total interest. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Initial capital EUR |
| monthly_contribution | number | yes | Monthly contribution EUR |
| annual_rate | number | yes | Annual interest rate percent |
| years | number | yes | Number of years |
Calculate interest savings from early partial loan repayment. Returns: {months_saved, new_months_remaining, interest_savings_eur, early_repayment_eur}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| remaining_capital | number | yes | Remaining loan capital EUR |
| monthly_payment | number | yes | Current monthly payment EUR |
| months_remaining | number | yes | Months remaining |
| early_amount | number | yes | Early repayment amount EUR |
Compute real (inflation-adjusted) purchasing power of a future amount. Use for retirement or savings goal in today's euros. Inputs: nominal future amount, years, average inflation %. Returns real value. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount in EUR |
| years | number | yes | Number of years |
| inflation_rate | number | yes | Annual inflation rate percent |
Project retirement savings vs need and identify shortfall. Use for retirement planning. Inputs: current age, retirement age, current savings, monthly contribution, target income. Returns projected balance and gap. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| current_age | number | yes | Current age |
| retirement_age | number | yes | Target retirement age |
| monthly_income | number | yes | Desired monthly retirement income EUR |
| savings_rate | number | yes | Annual return rate percent |
| current_savings | number | yes | Current savings EUR |
Compute recommended emergency fund target (3-6 months of expenses). Use for personal financial planning. Inputs: monthly expenses, dependents count, income stability. Returns recommended fund and savings timeline. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_expenses | number | yes | Monthly expenses EUR |
| dependents | number | yes | Number of dependents |
| job_stability | string | yes | Job stability level |
Estimate years to double an investment using the Rule of 72. Returns: {doubling_years_rule72, doubling_years_precise, annual_rate_pct}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_rate | number | yes | Annual return rate percent |
Compute the present value (PV) of a future sum given a discount rate. Use in DCF, NPV, or retirement planning. Inputs: future value, annual rate %, years. Returns PV and discount factor. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| future_value | number | yes | Future value EUR |
| rate | number | yes | Annual discount rate percent |
| years | number | yes | Number of years |
Compute the future value (FV) of a present sum at a given interest rate. Use for savings projections. Inputs: present value, annual rate %, years, compounding frequency. Returns FV and total interest. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| present_value | number | yes | Present value EUR |
| rate | number | yes | Annual rate percent |
| years | number | yes | Number of years |
Calculate periodic payment amount for a loan or annuity. Returns: {monthly_payment_eur, total_paid_eur, total_interest_eur}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| principal | number | yes | Principal amount EUR |
| rate | number | yes | Annual interest rate percent |
| periods | number | yes | Number of payment periods (months) |
Compare leasing vs buying a car over the same period. Use for automotive purchase decisions. Inputs: car price, lease monthly cost, loan rate, ownership years. Returns total costs and recommendation. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| car_price | number | yes | Car purchase price EUR |
| lease_monthly | number | yes | Monthly lease payment EUR |
| lease_months | number | yes | Lease duration months |
| residual_value | number | yes | Car residual value at lease end EUR |
| loan_rate | number | yes | Loan annual rate percent |
| loan_months | number | yes | Loan duration months |
Calculate tip and per-person amount for a restaurant bill. See list_bundles for related 'vie-quotidienne' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bill_amount | number | yes | Total bill amount |
| tip_pct | number | yes | Tip percentage |
| num_people | integer | yes | Number of people splitting |
Convert hourly wage to monthly and annual salary, gross or net. Use for job comparisons. Inputs: hourly rate, hours/week, weeks/year. Returns weekly, monthly, and annual figures. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| hourly_rate | number | yes | Hourly rate |
| hours_per_week | number | no | Hours worked per week |
| weeks_per_year | number | no | Weeks worked per year |
Calculate net worth and debt ratio from assets and liabilities. Returns: {net_worth_eur, debt_ratio_pct}. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| assets_total | number | yes | Total assets EUR |
| liabilities_total | number | yes | Total liabilities EUR |
Compute time and monthly contribution needed to reach a savings target. Use for goal-based personal finance. Inputs: target amount, current savings, monthly contribution, annual return %. Returns months to goal. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| target_amount | number | yes | Savings target EUR |
| monthly_savings | number | yes | Monthly savings EUR |
| annual_rate | number | yes | Annual return rate percent |
Compute the cost-per-use of a purchase to evaluate value. Use for buying decisions on durable goods or subscriptions. Inputs: purchase price, expected uses or years. Returns cost per use and break-even use count. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| item_price | number | yes | Item purchase price |
| expected_uses | number | yes | Expected number of uses |
Calculate due date and current gestational week from last period. Returns: {due_date}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| last_period_date | string | yes | Last menstrual period date YYYY-MM-DD |
Compute recommended daily water intake in liters by weight, activity, climate. Use for hydration planning. Inputs: weight kg, activity level, climate (temperate/hot). Returns L/day and glass count. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Body weight kg |
| activity_level | string | yes | Activity level |
| climate | string | yes | Climate |
Estimate optimal bedtime or wake time based on 90-min sleep cycles. Use for sleep optimization. Inputs: target wake or bedtime. Returns 4-6 cycle recommendations. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bedtime | string | yes | Bedtime HH:MM |
| wake_time | string | yes | Wake time HH:MM |
Compute healthy weight range based on BMI 18.5-24.9. Use for nutrition planning. Inputs: height cm. Returns ideal weight range (min, max) in kg and lb. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| height_cm | number | yes | Height in cm |
| sex | string | yes | Biological sex |
| frame | string | yes | Body frame size |
Calculate remaining caffeine in body after time elapsed. Returns: {hours_to_below_25mg, safe_to_sleep}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mg_consumed | number | yes | Caffeine consumed mg |
| hours_since | number | yes | Hours since consumption |
Compute when to reapply sunscreen based on SPF, activity, and water exposure. Use for sun safety. Inputs: SPF, skin type, activity (sweat/swim), UV index. Returns next reapply time. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| spf | number | yes | SPF factor |
| skin_type | number | yes | Fitzpatrick skin type 1-6 |
| uv_index | number | yes | Current UV index |
Compute money and health time saved by quitting smoking. Use for motivation and budgeting. Inputs: cigarettes/day, pack price. Returns daily/monthly/yearly savings and life-time recovered. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cigarettes_per_day | number | yes | Cigarettes smoked per day |
| pack_price | number | yes | Price per pack |
| cigarettes_per_pack | number | no | Cigarettes per pack |
Calculate next period, fertile window, and ovulation date. Returns: {next_period, ovulation_date, fertile_window_start, fertile_window_end}. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| last_period_date | string | yes | Last period start date YYYY-MM-DD |
| cycle_length | number | no | Average cycle length days |
Estimate reading time for a text based on word count. Returns: {hours_minutes}. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| word_count | number | yes | Number of words in text |
| reading_speed_wpm | number | no | Reading speed words per minute |
Generate a study schedule based on exam date and topics. Returns: {total_hours_needed, daily_hours_needed, feasible}. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| exam_date | string | yes | Exam date YYYY-MM-DD |
| topics_count | integer | yes | Number of topics to study |
| hours_per_topic | number | yes | Hours needed per topic |
Calculate the grade needed on remaining exams to reach target average. Returns: {error}. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| current_average | number | yes | Current average out of 20 |
| target_average | number | yes | Target final average |
| exams_done | integer | yes | Number of exams completed |
| exams_total | integer | yes | Total number of exams |
Compute student loan repayment schedule and total interest. Use for graduates planning repayment. Inputs: loan amount, interest rate %, term years. Returns monthly payment, total paid, total interest. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| loan_amount | number | yes | Loan amount EUR |
| annual_rate | number | yes | Annual interest rate percent |
| monthly_payment | number | yes | Monthly payment EUR |
Compare net tuition cost across multiple scholarships and aid packages. Use for college choice. Inputs: list of {tuition, aid} pairs. Returns ranked net costs and best option. See list_bundles for related 'education' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| tuition | number | yes | Annual tuition EUR |
| scholarship_1 | number | no | Scholarship 1 amount EUR |
| scholarship_2 | number | no | Scholarship 2 amount EUR |
| scholarship_3 | number | no | Scholarship 3 amount EUR |
Compute % change between two values, signed (increase or decrease). Use for performance comparisons, statistics. Inputs: old value, new value. Returns absolute and relative change. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| old_value | number | yes | Original value |
| new_value | number | yes | New value |
Simplify a ratio to lowest terms using GCD. Use for proportions, mixing, or scaling. Inputs: a, b (and optional c). Returns simplified ratio. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| numerator | integer | yes | Numerator |
| denominator | integer | yes | Denominator |
Add, subtract, multiply, or divide two fractions and return the simplified result. Use for math homework. Inputs: num1/den1, op, num2/den2. Returns result fraction (lowest terms). See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| num1 | integer | yes | Numerator of first fraction |
| den1 | integer | yes | Denominator of first fraction |
| num2 | integer | yes | Numerator of second fraction |
| den2 | integer | yes | Denominator of second fraction |
| operation | string | yes | Operation to perform |
Solve quadratic equation ax²+bx+c=0 with discriminant analysis. Use for math homework or physics problems. Inputs: coefficients a, b, c. Returns roots (real or complex), discriminant, and vertex. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | number | yes | Coefficient a |
| b | number | yes | Coefficient b |
| c | number | yes | Coefficient c |
Calculate linear regression slope and intercept from summary statistics. Returns: {error}. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| x_mean | number | yes | Mean of x values |
| y_mean | number | yes | Mean of y values |
| sum_xy | number | yes | Sum of (xi-x_mean)*(yi-y_mean) |
| sum_x2 | number | yes | Sum of (xi-x_mean)² |
| n | integer | yes | Number of data points |
Calculate cross exchange rate between two currencies via USD. Returns: {cross_rate_a_to_b, cross_rate_b_to_a}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| rate_a_usd | number | yes | Units of currency A per 1 USD |
| rate_b_usd | number | yes | Units of currency B per 1 USD |
Convert shoe size between EU, US (M/W) and UK systems. Returns: {converted_size, eu_size, original_size}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| size | number | yes | Shoe size in source system |
| from_system | string | yes | Source sizing system |
| to_system | string | yes | Target sizing system |
Convert clothing size between EU, US and UK systems. Returns: {original}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| size | number | yes | Size number in source system |
| from_system | string | yes | Source system |
| garment | string | yes | Type of garment |
| sex | string | yes | Sex |
Convert recipe quantities between cups, ml, grams, oz, tbsp, tsp. Use for international recipe translation. Inputs: value, from, to, ingredient (for density). Returns: {original}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount | number | yes | Amount to convert |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Convert a time between two UTC offsets accounting for date rollover. Use for international meetings. Inputs: time, from-utc, to-utc. Returns local time and date offset. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| time | string | yes | Time to convert HH:MM |
| from_offset | number | yes | Source UTC offset hours (e.g. 1 for UTC+1) |
| to_offset | number | yes | Target UTC offset hours |
Convert a number between bases 2 (binary), 8 (octal), 10 (decimal), and 16 (hex). Use for programming. Inputs: value, from-base, to-base. Returns converted number. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | string | yes | Number to convert as string |
| from_base | integer | yes | Source base |
| to_base | integer | yes | Target base |
Convert between Roman numerals and decimal (1-3999). Returns: {roman_numeral, decimal}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | integer | yes | Decimal number to convert to Roman numeral |
Calculate file transfer time at a given connection speed. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| file_size_gb | number | yes | File size in GB |
| speed_mbps | number | yes | Connection speed in Mbps |
Get dimensions (mm, in) of standard paper formats (A0-A10, B0-B10, US Letter, Legal, Tabloid). Use for printing. Inputs: format name. Returns dimensions in mm and inches. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| format | string | yes | Paper format name |
Convert AWG wire gauge to diameter (mm) and resistance (ohms/m). Use for electrical projects. Inputs: AWG number. Returns diameter, area, resistance, max current. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| awg | integer | yes | AWG gauge number |
Convert power values between W, kW, HP, BTU/h, cal/s. Returns: {original}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Power value to convert |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Convert pressure between Pa, kPa, MPa, bar, psi, atm, mmHg, mbar, torr. Use for engineering, weather, medicine. Inputs: value, from-unit, to-unit. Returns: {original}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Pressure value |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Convert angles between degrees, radians, gradians and turns. Returns: {original}. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Angle value |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Convert flow rate between L/s, L/min, L/h, m³/h, gpm, cfm. Use for plumbing, HVAC, or industrial design. Inputs: value, from-unit, to-unit. Returns converted flow rate. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Flow rate value |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Convert density between kg/m³, g/cm³, lb/ft³, and lb/gal. Use for engineering, chemistry, fluid mechanics. Inputs: value, from-unit, to-unit. Returns converted density. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Density value |
| from_unit | string | yes | Source unit |
| to_unit | string | yes | Target unit |
Calculate great-circle distance between two coordinates. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| lat1 | number | yes | Departure latitude |
| lon1 | number | yes | Departure longitude |
| lat2 | number | yes | Arrival latitude |
| lon2 | number | yes | Arrival longitude |
Check if passport is valid for travel (6-month rule). Returns: {note}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| expiry_date | string | yes | Passport expiry date YYYY-MM-DD |
| travel_date | string | yes | Planned travel date YYYY-MM-DD |
Calculate the margin charged on a currency exchange. Returns: {cost_per_1000_eur, rating}. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bank_rate | number | yes | Rate offered by bank/exchange |
| mid_market_rate | number | yes | Mid-market (real) exchange rate |
Compute the time difference (hours) between two timezones. Use for international meetings. Inputs: timezone A, timezone B. Returns delta hours and current local times. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| city1 | string | yes | First city |
| city2 | string | yes | Second city |
Compute optimal vacation usage by chaining bridge days with public holidays. Use for HR or worker planning. Inputs: vacation days, country, year. Returns best plan with day count. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| public_holidays_count | integer | yes | Number of public holidays near weekends |
| vacation_days_available | integer | yes | Annual vacation days available |
Estimate travel insurance cost based on trip cost, age, duration, destination. Use for trip planning. Inputs: trip cost, traveler age, days, region. Returns premium estimate. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| destination | string | yes | Destination region |
| days | integer | yes | Trip duration days |
| age | integer | yes | Traveler age |
| coverage_level | string | yes | Coverage level |
Adjust baking recipe for high altitude (less leavening, more liquid, higher temp). Use for mountain cooking. Inputs: altitude m, ingredients. Returns adjusted recipe. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| altitude_m | number | yes | Altitude in meters |
| flour_cups | number | yes | Flour in cups |
| sugar_cups | number | yes | Sugar in cups |
| liquid_cups | number | yes | Liquid in cups |
| oven_temp_c | number | yes | Oven temperature °C |
Compute daily food portion (g) for dogs and cats by weight, age, activity. Use for pet feeding. Inputs: animal type, weight, activity, life stage. Returns grams/day and meal split. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Pet weight kg |
| age_years | number | yes | Pet age years |
| activity | string | yes | Activity level |
| pet_type | string | yes | Type of pet |
Compute dog due date from mating date (gestation 63 days). Use for breeders. Inputs: mating date. Returns due date window and milestone dates. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mating_date | string | yes | Mating date YYYY-MM-DD |
Compute cat due date from mating date (gestation 63-67 days). Use for breeders. Inputs: mating date. Returns due date window and milestones. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mating_date | string | yes | Mating date YYYY-MM-DD |
Estimate horse weight using Carroll formula from heart girth and body length. Use for vets, feed dosing. Inputs: heart girth cm, body length cm. Returns weight kg. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| heart_girth_cm | number | yes | Heart girth circumference cm |
| body_length_cm | number | yes | Body length cm |
Compute aquarium heater wattage needed by tank volume and target temp. Use for aquarium setup. Inputs: tank L, current temp, target temp. Returns wattage W. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| volume_liters | number | yes | Tank volume liters |
| room_temp_c | number | yes | Room temperature °C |
| target_temp_c | number | yes | Target water temperature °C |
Generate upcoming vaccination schedule for a puppy or kitten. Use for pet care planning. Inputs: pet type, birth date, last vaccine date. Returns upcoming dates and vaccines. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| pet_type | string | yes | Type of pet |
| birth_date | string | yes | Pet birth date YYYY-MM-DD |
Compute fabric meters needed for a garment by pattern. Use for sewing. Inputs: garment type, size, fabric width. Returns meters of fabric. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| garment_type | string | yes | Garment type |
| size | string | yes | Garment size |
| fabric_width_cm | number | yes | Fabric roll width cm |
Convert ring sizes between EU, US, UK, and Japan systems. Use for international jewelry shopping. Inputs: size, from-system, to-system. Returns equivalent size. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| size | number | yes | Ring size in source system |
| from_system | string | yes | Source sizing system |
Convert bra size between FR, US, UK and EU systems. Returns: {FR, US, UK, EU}. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| band_size | integer | yes | Band size in source system (numeric) |
| cup | string | yes | Cup letter (A, B, C, D, DD, E, F) |
| from_system | string | yes | Source sizing system |
Compute fabric meters needed for curtains, including hems and pattern repeat. Use for sewing. Inputs: window dimensions, fullness, pattern repeat. Returns fabric length to buy. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| window_width_cm | number | yes | Window width cm |
| window_height_cm | number | yes | Window height cm |
| fullness_ratio | number | no | Fullness ratio (2 = double fullness) |
| num_panels | integer | no | Number of curtain panels |
Estimate dress alteration cost and time by alteration type. Use for tailoring or wedding-dress budgeting. Inputs: alterations needed (hem, sides, sleeves), garment type. Returns total cost estimate and time hours. See list_bundles for related 'textile-mode' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| measurement_bust | number | yes | Actual bust measurement cm |
| measurement_waist | number | yes | Actual waist measurement cm |
| measurement_hips | number | yes | Actual hip measurement cm |
| target_size | string | yes | Target FR dress size |
Calculate star distance from apparent and absolute magnitude. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| apparent_magnitude | number | yes | Apparent magnitude (m) |
| absolute_magnitude | number | yes | Absolute magnitude (M) |
Compute telescope magnification, exit pupil, and field of view. Use for astronomy hobbyists. Inputs: telescope focal length, eyepiece focal length, eyepiece field of view. Returns magnification and exit pupil. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| focal_length_mm | number | yes | Telescope focal length mm |
| eyepiece_mm | number | yes | Eyepiece focal length mm |
Compute your weight on other planets using gravity ratios. Use for fun, education, sci-fi. Inputs: weight on Earth (kg). Returns weight on each planet of the solar system. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| earth_weight_kg | number | yes | Weight on Earth in kg |
| planet | string | yes | Target planet |
Convert astronomical distances between light-years, parsecs, AU, km. Returns: {light_years, parsecs, au, km, original}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Distance value |
| from_unit | string | yes | Source unit |
Calculate energy released by an earthquake from its magnitude. Returns: {energy_joules, tnt_equivalent_kg}. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| magnitude | number | yes | Richter/moment magnitude |
Compute oven cooking time for meat by cut, weight, and doneness. Use for cooking. Inputs: meat type, weight kg, target doneness. Returns time min and oven temp °C. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Meat weight kg |
| meat_type | string | yes | Type of meat |
| doneness | string | yes | Desired doneness |
Calculate dry pasta, water and salt for a given number of people. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| num_people | integer | yes | Number of people |
| pasta_type | string | yes | Pasta shape |
| appetite | string | yes | Appetite level |
Compute baker's hydration % = water/flour×100. Use for bread recipe analysis. Inputs: flour g, water g. Returns hydration % and dough type (firm/standard/wet). See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| flour_grams | number | yes | Flour weight grams |
| water_grams | number | yes | Water weight grams |
Estimate thawing time for frozen food by weight and method. Returns: {safe_temp_check, tip}. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Food weight kg |
| method | string | yes | Thawing method |
Compute solar panel return on investment over their lifetime. Use for energy audit. Inputs: install cost, kW capacity, location production, kWh price. Returns ROI years and lifetime savings. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| system_cost | number | yes | Total system cost EUR |
| annual_kwh | number | yes | Annual production kWh |
| price_kwh | number | no | Electricity price EUR/kWh |
Compute electric vehicle charging cost and time to full. Use for EV trip planning. Inputs: battery kWh, current %, target %, charger kW, kWh price. Returns cost and hours. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| battery_kwh | number | yes | Battery capacity kWh |
| current_pct | number | yes | Current charge % |
| target_pct | number | no | Target charge % |
| price_kwh | number | no | Price per kWh |
Compute heat pump Coefficient of Performance (COP). Use for HVAC efficiency analysis. Inputs: heat output kW, electric input kW. Returns COP and seasonal SCOP estimate. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| outdoor_temp | number | yes | Outdoor temperature °C |
| indoor_temp | number | no | Indoor target °C |
Compute annual electricity cost of a household appliance. Use for energy audit and replacement decisions. Inputs: power W, daily hours, kWh price. Returns annual cost and CO₂ kg. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| power_w | number | yes | Power in watts |
| hours_day | number | yes | Hours used per day |
| price_kwh | number | no | EUR per kWh |
Compute energy and money saved by switching from incandescent/halogen to LED. Use for energy audit. Inputs: old wattage, LED wattage, daily hours, kWh price, bulbs. Returns yearly savings. See list_bundles for related 'energie' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| old_w | number | yes | Old bulb wattage |
| led_w | number | yes | LED replacement wattage |
| hours_day | number | no | Hours per day |
| num_bulbs | number | no | Number of bulbs |
| price_kwh | number | no | EUR/kWh |
Compute required sample size for a survey to hit a target margin of error. Use for survey design and A/B testing. Inputs: population, confidence %, margin of error %. Returns minimum sample size. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| confidence | string | no | Confidence level |
| margin_error_pct | number | yes | Margin of error % |
| population | number | no | Population size |
Compute z-score (standardized score) and percentile from a value, mean, and standard deviation. Use for statistics and outlier detection. Returns z, percentile, p-value. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Observed value |
| mean | number | yes | Population mean |
| std_dev | number | yes | Standard deviation |
Compute confidence interval for a sample mean. Use for statistics, A/B test results, or polling. Inputs: mean, std dev, sample size, confidence (90/95/99%). Returns CI lower/upper bounds. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sample_mean | number | yes | Sample mean |
| std_dev | number | yes | Standard deviation |
| sample_size | number | yes | Sample size |
| confidence | string | no | Confidence level |
Compute the percentile rank of a value within a dataset. Use for benchmarking scores or salaries. Inputs: value, dataset (list of numbers). Returns percentile (0-100). See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Value to rank |
| values_below | number | yes | Number of values below |
| total_values | number | yes | Total number of values |
Compute startup monthly burn rate and runway. Use for fundraising or expense control. Inputs: cash on hand, monthly expenses, monthly revenue. Returns burn, runway in months, profitability date. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| monthly_expenses | number | yes | Monthly expenses EUR |
| monthly_revenue | number | no | Monthly revenue EUR |
| cash_balance | number | yes | Cash in bank EUR |
Compute Customer Acquisition Cost vs Lifetime Value ratio. Use for SaaS unit economics analysis (target ≥3.0). Inputs: total CAC, LTV. Returns ratio and health verdict. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cac | number | yes | Customer acquisition cost EUR |
| ltv | number | yes | Customer lifetime value EUR |
Compute customer or revenue churn rate over a period. Use for SaaS retention analysis. Inputs: starting customers, churned, period length. Returns churn %, retention %, and annualized rate. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| start_customers | number | yes | Customers at period start |
| lost_customers | number | yes | Customers lost |
| period_months | number | no | Period in months |
Convert between markup and margin (often confused). Use for pricing decisions or COGS reporting. Inputs: cost and either markup % or margin %. Returns selling price and the other metric. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cost | number | yes | Cost price |
| selling_price | number | yes | Selling price |
Compute the effective discount when stacking multiple promotions. Use for promo design or shopping comparisons. Inputs: original price, discount % list. Returns final price and effective single-discount equivalent. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| original_price | number | yes | Original price |
| discount_1_pct | number | yes | First discount % |
| discount_2_pct | number | no | Second discount % |
Compute projectile trajectory: range, max height, time of flight. Use for physics or ballistics. Inputs: initial velocity, launch angle, height. Returns range, peak, flight time. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| velocity | number | yes | Initial velocity m/s |
| angle_deg | number | yes | Launch angle degrees |
| height | number | no | Initial height m |
Compute simple pendulum period T=2π√(L/g). Use for physics homework or clock design. Inputs: length m, gravity m/s² (default 9.81). Returns period in seconds. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_m | number | yes | Pendulum length meters |
| gravity | number | no | Gravity m/s² |
Compute kinetic energy KE=½·m·v². Use for physics, vehicle safety analysis. Inputs: mass kg, velocity m/s. Returns kinetic energy in joules. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mass_kg | number | yes | Mass in kg |
| velocity_ms | number | yes | Velocity in m/s |
Compute wave frequency, wavelength, or period from any two. Formula: c=λ·f. Use for physics or acoustics. Inputs: any 2 of (frequency Hz, wavelength m, speed m/s). Returns missing values. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| frequency_hz | number | yes | Frequency in Hz |
| speed_ms | number | no | Wave speed m/s (343=sound) |
Compute buoyancy force, displaced volume, or floating analysis (Archimedes). Use for physics or shipping. Inputs: object mass/volume, fluid density. Returns buoyant force and float/sink verdict. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| volume_m3 | number | yes | Object volume m³ |
| fluid_density | number | no | Fluid density kg/m³ |
| object_mass | number | yes | Object mass kg |
Compute lab solution dilution C1·V1=C2·V2. Use for stock-to-working solution prep. Inputs: stock concentration, target concentration, target volume. Returns stock volume and diluent volume. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| c1 | number | yes | Initial concentration mol/L |
| v1_ml | number | yes | Initial volume mL |
| c2 | number | yes | Target concentration mol/L |
Compute triangle area from three side lengths using Heron's formula. Use when angles aren't known. Inputs: sides a, b, c. Returns area, perimeter, type (equilateral/isoceles/scalene). See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | number | yes | Side a |
| b | number | yes | Side b |
| c | number | yes | Side c |
Compute sphere volume V=(4/3)πr³ and surface area A=4πr². Use for ball, tank, or astronomy problems. Inputs: radius. Returns volume and area. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| radius | number | yes | Radius |
Compute cone volume V=(1/3)πr²h and lateral/total surface area. Use for geometry or container design. Inputs: radius, height. Returns volume and areas. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| radius | number | yes | Base radius |
| height | number | yes | Height |
Compute area, perimeter, and apothem of a regular n-gon. Use for geometry or tiling. Inputs: number of sides, side length. Returns full geometric properties. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| sides | number | yes | Number of sides |
| length | number | yes | Side length |
Compute Euclidean distance between two 2D points. Use for geometry, mapping. Formula: √((x2−x1)²+(y2−y1)²). Inputs: x1,y1,x2,y2. Returns distance. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| x1 | number | yes | X1 |
| y1 | number | yes | Y1 |
| x2 | number | yes | X2 |
| y2 | number | yes | Y2 |
Convert shoe size between EU, US, UK, and Japanese systems. Use for international shopping. Inputs: size, from-system, to-system, gender. Returns equivalent. See list_bundles for related 'conversions' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| size | number | yes | Shoe size |
| from_system | string | yes | From system |
Detect the hidden margin charged by a money exchanger over the mid-market rate. Use to compare currency exchange offers. Inputs: offered rate, mid-market rate. Returns margin %. See list_bundles for related 'voyage' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| bank_rate | number | yes | Bank/bureau rate |
| market_rate | number | yes | Mid-market rate |
Convert dog age to human-equivalent years using modern AAHA method. Use for canine health monitoring. Inputs: dog age years, breed size. Returns human-equivalent age. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| dog_years | number | yes | Dog age in years |
| size | string | no | Dog size |
Convert cat age to human-equivalent years (15+9+4×). Use for feline health. Inputs: cat age years. Returns human-equivalent age and life stage. See list_bundles for related 'animaux' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cat_years | number | yes | Cat age in years |
Compute French overtime pay (heures supplémentaires) per labor code. Use for HR or employee verification. Inputs: hourly rate, normal hours, overtime hours. Returns gross overtime pay with 25%/50% premiums. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| base_hours | number | no | Base weekly hours |
| actual_hours | number | yes | Actual weekly hours |
| hourly_rate | number | yes | Hourly rate EUR |
Compute French paid vacation days earned (congés payés). Use for HR planning. Inputs: months worked, contract type. Returns days earned (2.5/month rule) and equivalent in working days. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| months_worked | number | yes | Months worked |
| full_time | boolean | no | Full-time |
Compute total employer cost in France (gross + social charges). Use for hiring budget or freelance vs salary comparison. Inputs: gross salary, status (cadre/non-cadre). Returns employer cost and total charges. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| gross_monthly | number | yes | Monthly gross salary EUR |
Compute fully-loaded hourly cost-to-company. Use for project pricing or freelance rate. Inputs: monthly salary, social charges %, billable hours/month. Returns true hourly cost. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_gross | number | yes | Annual gross salary EUR |
| charges_pct | number | no | Employer charges % |
| work_days | number | no | Working days/year |
Compute French maternity leave duration and IJSS allowance. Use for HR or expectant parents. Inputs: due date, prior children count, multiple birth. Returns pre/post-birth leave days and allowance estimate. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| existing_children | number | yes | Existing children |
| twins | boolean | no | Multiple birth |
Compute paint quantity for walls including coats and waste margin. Use for renovation budget. Inputs: room dimensions, coats, openings. Returns paint liters and recommended buying. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Wall area m² |
| coats | number | no | Number of coats |
| coverage | number | no | Coverage m²/liter |
Compute grout quantity for a tiling job. Use for renovation budget. Inputs: surface m², tile size, joint width. Returns grout kg needed. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Area m² |
| tile_cm | number | yes | Tile size cm |
| joint_mm | number | no | Joint width mm |
| depth_mm | number | no | Joint depth mm |
Compute wallpaper rolls for a room including pattern repeat and waste. Use for renovation. Inputs: walls m², roll dimensions, pattern repeat. Returns roll count and length needed. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| perimeter_m | number | yes | Room perimeter m |
| height_m | number | yes | Wall height m |
| roll_width | number | no | Roll width m |
| roll_length | number | no | Roll length m |
Compute grass seed quantity (kg) for a lawn area at recommended seeding rate. Use for landscaping. Inputs: area m², seed rate g/m². Returns seed kg. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| area_m2 | number | yes | Lawn area m² |
| rate_g_m2 | number | no | Seeding rate g/m² |
Compute chlorine dosage (g) for pool maintenance based on volume and target ppm. Use for pool care. Inputs: pool volume m³, target chlorine ppm, current ppm. Returns chlorine grams. See list_bundles for related 'construction' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| volume_liters | number | yes | Pool volume liters |
| current_ppm | number | no | Current chlorine ppm |
| target_ppm | number | no | Target chlorine ppm |
Compute gear ratio and torque/speed multiplication. Use for mechanical engineering, cycling, automotive. Inputs: driver teeth, driven teeth. Returns ratio and torque multiplier. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| driving_teeth | number | yes | Driving gear teeth |
| driven_teeth | number | yes | Driven gear teeth |
Compute spring constant k from Hooke's law F=k·x. Use for physics or mechanical design. Inputs: force N, displacement m. Returns spring constant N/m. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| force_n | number | yes | Applied force N |
| displacement_m | number | yes | Displacement m |
Compute hydraulic system pressure P=F/A. Use for hydraulic design. Inputs: force N, area m². Returns pressure in Pa, kPa, bar, psi. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| force_n | number | yes | Force N |
| area_cm2 | number | yes | Piston area cm² |
Compute motor torque from power and RPM. T(Nm)=9550·P(kW)/RPM. Use for mechanical sizing. Inputs: power kW, rpm. Returns torque in N·m and lb-ft. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| power_w | number | yes | Power watts |
| rpm | number | yes | RPM |
Compute pump power requirement. P=ρ·g·H·Q/η. Use for fluid system design. Inputs: flow m³/h, head m, fluid density, efficiency. Returns kW. See list_bundles for related 'science' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| flow_m3h | number | yes | Flow rate m³/h |
| head_m | number | yes | Head m |
| efficiency | number | no | Pump efficiency |
Compute volumetric (dimensional) weight for shipping. Carriers bill the higher of actual and dim weight. Inputs: L×W×H cm, divisor (5000 air, 6000 ground). Returns dim weight kg. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| length_cm | number | yes | Length cm |
| width_cm | number | yes | Width cm |
| height_cm | number | yes | Height cm |
| actual_kg | number | yes | Actual weight kg |
Compute Economic Order Quantity (Wilson formula). Use for supply chain optimization. Inputs: annual demand, order cost, holding cost per unit. Returns EOQ and orders/year. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| annual_demand | number | yes | Annual demand units |
| order_cost | number | yes | Cost per order |
| holding_cost | number | yes | Annual holding cost per unit |
Reverse-VAT: extract the VAT and net price from a TTC amount. Use to back out tax from a gross invoice. Inputs: TTC amount, VAT rate %. Returns HT, VAT amount. See list_bundles for related 'finance-france' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| amount_incl | number | yes | Amount including VAT |
| vat_rate | number | no | VAT rate % |
Compute inventory turnover ratio = COGS / avg inventory. Use for retail efficiency analysis. Inputs: COGS, average inventory value. Returns turnover and days-on-hand. See list_bundles for related 'finance-universal' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| cogs | number | yes | Cost of goods sold |
| avg_inventory | number | yes | Average inventory value |
Compute ellipse area A=π·a·b and approximate perimeter (Ramanujan). Use for elliptical fields, tracks, or design. Inputs: semi-major a, semi-minor b. Returns area and perimeter. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| a | number | yes | Semi-major axis |
| b | number | yes | Semi-minor axis |
Compute Euclidean distance between two 3D points. Use for 3D modeling, physics. Formula: √(Δx²+Δy²+Δz²). Inputs: x1,y1,z1,x2,y2,z2. Returns distance. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| x1 | number | yes | — |
| y1 | number | yes | — |
| z1 | number | yes | — |
| x2 | number | yes | — |
| y2 | number | yes | — |
| z2 | number | yes | — |
Compute cylinder volume V=πr²h and surface area A=2πr(r+h). Use for tanks, pipes, or containers. Inputs: radius, height. Returns volume and areas. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| radius | number | yes | Radius |
| height | number | yes | Height |
Compute pyramid volume V=(1/3)·base_area·height. Use for geometry or architecture. Inputs: base area, height (and optional slant for surface area). Returns volume and surface area. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| base_length | number | yes | Base side length |
| height | number | yes | Pyramid height |
Compute torus volume V=2π²Rr² and surface area. Use for ring-shaped objects (donuts, inner tubes). Inputs: major radius R, minor radius r. Returns volume and area. See list_bundles for related 'math' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| major_r | number | yes | Major radius (center to tube center) |
| minor_r | number | yes | Minor radius (tube radius) |
Convert between light-years and km/miles. Use for astronomy. 1 ly = 9.461×10¹² km. Inputs: value, from, to. Returns converted distance. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| value | number | yes | Value |
| unit | string | yes | Input unit |
Scale recipe quantities to a new servings count. Use for adjusting recipes. Inputs: ingredients with quantities, original servings, target servings. Returns adjusted quantities. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| original_servings | number | yes | Original servings |
| target_servings | number | yes | Target servings |
| amount | number | yes | Original ingredient amount |
Compute meat cooking time and target internal temperature by cut and doneness. Use for kitchen prep. Inputs: meat type, weight kg, doneness. Returns oven time and target temp. See list_bundles for related 'cuisine' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| weight_kg | number | yes | Meat weight kg |
| meat | string | yes | Meat type |
| doneness | string | no | Doneness |
Compute remaining caffeine in body over time using 5-hour half-life. Use for sleep planning. Inputs: caffeine mg, time since intake. Returns remaining mg and clearance forecast. See list_bundles for related 'sante' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| mg | number | yes | Caffeine mg consumed |
| hours | number | no | Hours since consumption |
Compute dew point temperature using Magnus formula. Use for HVAC, weather, comfort analysis. Inputs: temperature °C, relative humidity %. Returns dew point °C and comfort class. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| temp_c | number | yes | Temperature °C |
| humidity_pct | number | yes | Relative humidity % |
Estimate sunrise/sunset times for a latitude on a given day of year. Use for astronomy or outdoor planning. Inputs: latitude, day of year. Returns sunrise/sunset hours, daylight duration. See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| latitude | number | yes | Latitude |
| day_of_year | number | yes | Day of year (1-366) |
Compute lime or sulfur amount to shift soil pH to a target. Use for gardening. Inputs: current pH, target pH, area m². Returns amendment type and kg/m². See list_bundles for related 'astronomie-nature' calculators.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| current_ph | number | yes | Current soil pH |
| target_ph | number | yes | Target pH |
| area_m2 | number | yes | Garden area m² |
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0.4.0
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