MCP serverio.github.tresor4k/macalc-mcp

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' calcula

Add two time durations and return the total in hours and minutes. See list_bundles for related 'temps-rh' calculators.

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 re

Calculate exact age in multiple units from birth date. Returns: {weeks, hours, minutes, seconds}. See list_bundles for related 'fun' calculators.

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

Assess altitude sickness risk and recommend acclimatization schedule. Returns: {risk_level, risk_color, recommended_acclimatization_days, symptoms_to_watch, recommendations}. See l

Convert angles between degrees, radians, gradians and turns. Returns: {original}. See list_bundles for related 'conversions' calculators.

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' calcul

Universal AI-powered calculator — handles any calculation not covered by specialized tools. Requires premium subscription.

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

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 inp

Calculate French auto-entrepreneur (micro-enterprise) net income and social charges. Returns: {social_charges_rate_pct, social_charges, abatement_fiscal_pct, taxable_income_approx,

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_bun

Estimate French Baccalauréat final score from grades and coefficients. Use to track lycée results before official scores. Inputs: grades by subject with coefficients. Returns weigh

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_bund

Convert baking measurements between cups, tablespoons, grams, and milliliters for common ingredients. Use for translating recipes across regions. Inputs: ingredient, value, from-un

Convert numbers between bases (binary, octal, decimal, hexadecimal, any base 2-36). Returns: {input, decimal_value, result}. See list_bundles for related 'math' calculators.

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 'constr

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, es

Compute Belgian donation tax (droits de donation) by region (Bruxelles/Flandre/Wallonie). Use for estate planning in Belgium. Inputs: region, amount, recipient relation. Returns ta

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,

Estimate Belgian retirement pension based on career years and average salary. Use for retirement planning in Belgium. Inputs: years of contribution, average salary, status (employe

Convert Belgian gross monthly salary to net salary (approximation). Returns: {gross_monthly, social_cotisations_13_07pct, special_social_contribution, professional_withholding_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_108

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.

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. R

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.

Calculate Body Mass Index (BMI) and weight category. See list_bundles for related 'sante' calculators.

Calculate Basal Metabolic Rate using Mifflin-St Jeor equation. Returns: {bmr_kcal}. See list_bundles for related 'sante' calculators.

Estimate body fat percentage from BMI, age and sex using Deurenberg equation. Returns: {body_fat_pct}. See list_bundles for related 'sante' calculators.

Calculate body fat percentage using the US Navy circumference method. See list_bundles for related 'sante' calculators.

Convert BPM tempo to millisecond delay times for different note values. See list_bundles for related 'musique' calculators.

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' calculator

Convert bra size between FR, US, UK and EU systems. Returns: {FR, US, UK, EU}. See list_bundles for related 'textile-mode' calculators.

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 distanc

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 a

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

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 reven

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

Estimate French Brevet (DNB) score from grades and continuous-control marks. Use for collège students forecasting their result. Inputs: grades by subject, continuous control. Retur

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

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

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, profi

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_

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 rela

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_bu

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. Se

Calculate remaining caffeine in body after time elapsed. Returns: {hours_to_below_25mg, safe_to_sleep}. See list_bundles for related 'sante' calculators.

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 l

Estimate calories burned during physical activity using MET values. Returns: {calories_burned}. See list_bundles for related 'sante' calculators.

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, fede

Calculate Canadian Employment Insurance (EI) premiums for Quebec and non-Quebec residents. Returns: {gross_annual_cad, max_insurable_earnings, insurable_earnings, employee_rate_pct

Calculate Canadian federal income tax (CRA) with basic personal amount deduction. Returns: {income_cad, basic_personal_amount, taxable_income, federal_tax, effective_rate_pct, marg

Calculate Quebec Pension Plan (RRQ) contributions for employee. Returns: {gross_annual_cad, rrq_base_earnings, rrq_contribution_tier1, rrq_additional_earnings, rrq_contribution_tie

Compute French property capital gains tax (plus-value immobilière) including duration abatements. Use for sellers of secondary residence. Inputs: purchase price, sale price, years

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' calculator

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

Estimate annual personal carbon footprint (tCO₂e). Use for sustainability awareness. Inputs: housing, transport, diet, lifestyle. Returns total emissions and breakdown. See list_bu

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_of

Calculate hypergeometric probability of drawing specific cards from a deck. Returns: {odds_one_in}. See list_bundles for related 'jeux-probabilites' calculators.

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 rel

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 'animau

Calculate daily cat food quantity based on weight, age and lifestyle. Returns: {kcal_per_day}. See list_bundles for related 'animaux' calculators.

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'

Calculate Belgian meal voucher (cheque-repas / maaltijdcheque) benefit. Returns: {face_value_per_voucher, employer_contribution_per_voucher, employee_contribution_per_voucher, mont

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

Determine Chinese zodiac animal and element from birth year. Returns: {full_sign}. See list_bundles for related 'fun' calculators.

Compute customer or revenue churn rate over a period. Use for SaaS retention analysis. Inputs: starting customers, churned, period length. Returns churn %, retention %, and annuali

Convert clothing size between EU, US and UK systems. Returns: {original}. See list_bundles for related 'conversions' calculators.

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 vo

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 l

Compute compound interest with monthly contributions (savings plan). Use for systematic savers. Inputs: initial amount, monthly contribution, annual rate %, years. Returns final va

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. Se

Calculate concrete stair dimensions, volume and materials using Blondel's formula. See list_bundles for related 'construction' calculators.

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. Return

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

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

Convert recipe quantities between cups, ml, grams, oz, tbsp, tsp. Use for international recipe translation. Inputs: value, from, to, ingredient (for density). Returns: {original}.

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-vi

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 p

Calculate unit cost price from raw materials, labor, and overhead. Returns: {total_cost}. See list_bundles for related 'finance-universal' calculators.

Calculate camera crop factor and equivalent focal length based on sensor width. See list_bundles for related 'photographie' calculators.

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

Calculate French flat tax (30% PFU) on cryptocurrency capital gains at withdrawal. Returns: {gain_ratio}. See list_bundles for related 'crypto' calculators.

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.

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, ...}.

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

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 re

Estimate cycling power output considering gradient, speed and total mass. Returns: {power_watts, watts_per_kg}. See list_bundles for related 'sport' calculators.

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 'mat

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'

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.

Calculate file transfer time at a given connection speed. See list_bundles for related 'conversions' calculators.

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 relat

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.

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.

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

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

Estimate shipping cost from weight, distance and service (standard vs express). Returns: {cost_eur, formula, note}. See list_bundles for related 'vie-quotidienne' calculators.

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_bun

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_bu

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'

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. Se

Calculate dice roll probability for exact values, minimum or maximum targets. Returns: {probability}. See list_bundles for related 'jeux-probabilites' calculators.

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 'sci

Calculate discounted price with optional successive discounts. Returns: {original_price, price_after_first, effective_discount_pct}. See list_bundles for related 'finance-universal

Compute the effective discount when stacking multiple promotions. Use for promo design or shopping comparisons. Inputs: original price, discount % list. Returns final price and eff

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 'mat

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 '

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'

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' calcula

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_bund

Calculate daily dog food quantity based on weight, age and activity level. Returns: {kcal_per_day}. See list_bundles for related 'animaux' calculators.

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

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 fo

Calculate DCA portfolio value and performance for recurring crypto investments. See list_bundles for related 'crypto' calculators.

Determine French DPE energy class from primary energy consumption. Returns: {note}. See list_bundles for related 'immobilier' calculators.

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

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 to

Calculate estimated due date using Naegele's rule and return trimester milestone dates

Calculate energy released by an earthquake from its magnitude. Returns: {energy_joules, tnt_equivalent_kg}. See list_bundles for related 'astronomie-nature' calculators.

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 ba

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.

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

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. S

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. Se

Compute recommended emergency fund target (3-6 months of expenses). Use for personal financial planning. Inputs: monthly expenses, dependents count, income stability. Returns recom

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 emp

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.

Solve 1st degree (ax+b=0) or 2nd degree (ax²+bx+c=0) equations. Returns: {error}. See list_bundles for related 'math' calculators.

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

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 remov

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 %. Se

Calculate the margin charged on a currency exchange. Returns: {cost_per_1000_eur, rating}. See list_bundles for related 'voyage' calculators.

Calculate expected value and profitability of a bet or investment decision. Returns: {lose_probability}. See list_bundles for related 'jeux-probabilites' calculators.

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 'photographi

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-mod

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.

Calculate factorial, permutations P(n,r), and combinations C(n,r). Returns: {factorial}. See list_bundles for related 'math' calculators.

Calculate NPK fertilizer quantities needed based on crop type and soil type. Returns: {total_kg}. See list_bundles for related 'jardinage' calculators.

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 re

Calculate great-circle distance between two coordinates. See list_bundles for related 'voyage' calculators.

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' calcul

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_bu

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 se

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' calcul

Perform fraction operations: add, subtract, multiply, divide, simplify. Returns: {input, result, decimal}. See list_bundles for related 'math' calculators.

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).

Return maximum recommended freezer storage duration for a food type. See list_bundles for related 'cuisine' calculators.

Estimate thawing time for frozen food by weight and method. Returns: {safe_temp_check, tip}. See list_bundles for related 'cuisine' calculators.

Calculate French income tax (IR) for 2026 using progressive brackets per Article 197 CGI with family quotient system. Returns: {income, family_quotient, total_tax, effective_rate_p

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 relat

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_

Calculate the frequency of a musical note based on equal temperament tuning. See list_bundles for related 'musique' calculators.

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' calcul

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_bundle

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_bu

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

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

Estimate effective daily sunlight hours for a garden based on latitude, month and orientation. See list_bundles for related 'jardinage' calculators.

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_

Calculate Ethereum transaction gas fee in ETH and USD. See list_bundles for related 'crypto' calculators.

Calculate GCD (PGCD) and LCM (PPCM) of two integers using Euclidean algorithm. Returns: {gcd, lcm}. See list_bundles for related 'math' calculators.

Compute gear ratio and torque/speed multiplication. Use for mechanical engineering, cycling, automotive. Inputs: driver teeth, driven teeth. Returns ratio and torque multiplier. Se

Calculate glycemic load (GL) per food and total for a meal. Returns: {thresholds}. See list_bundles for related 'cuisine' calculators.

Convert French school grades (out of 20) to GPA and academic mention. See list_bundles for related 'education' calculators.

Compute simple or weighted grade average. Use for school report cards. Inputs: grades list, optional weights/coefficients. Returns weighted average and missing-grade-needed forecas

Calculate the grade needed on remaining exams to reach target average. Returns: {error}. See list_bundles for related 'education' calculators.

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 li

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.

Estimate harvest date for vegetables based on sowing date and region. Returns: {harvest_date, days_to_harvest}. See list_bundles for related 'jardinage' calculators.

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 r

Calculate heart rate training zones Z1-Z5, optionally using Karvonen method. See list_bundles for related 'sante' calculators.

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 'astronomi

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_bu

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

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. Se

Estimate French housing aid (APL — Aide Personnalisee au Logement). Returns: {rent, rent_ceiling, estimated_apl, note}.

Compare multiple mortgage offers sorted by total cost. Returns: {offers_count, best_offer, comparison}. See list_bundles for related 'immobilier' calculators.

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

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' calculato

Calculate hyperfocal distance and near/far sharp limits for a lens and aperture. See list_bundles for related 'photographie' calculators.

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.

Estimate ideal body weight using Lorentz and Devine formulas. Returns: {lorentz_kg, devine_kg, average_kg}. See list_bundles for related 'sante' calculators.

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

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.

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

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 valu

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}

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_bundl

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 fo

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' calcul

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

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

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_bund

Estimate jet lag recovery time based on timezone difference and direction of travel. Returns: {direction, tips}. See list_bundles for related 'voyage' calculators.

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'

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' calculato

Calculate weekly and annual laundry cost (electricity + water + detergent). Returns: {per_load_eur, weekly_eur, annual_eur}. See list_bundles for related 'vie-quotidienne' calculat

Calculate recommended lawn mowing interval based on grass type, season and rainfall. See list_bundles for related 'jardinage' calculators.