Calculatrices

Calculateur de Coût du Carburant

Estimate the gas cost of any trip from distance, fuel economy, and the price per gallon.

Calculateur d'Essence

Figure out what it costs to top off your tank from its current level.

Calculateur MPG

Compute real miles per gallon from your odometer and gallons pumped.

Calculateur de Vitesse

Calculate average speed from distance and time — supports hours and minutes.

Calculateur de Temps de Conduite

Estimate driving time including planned rest stops.

Calculateur de Trajet

Add up gas, insurance, and parking for the full year of commuting.

Calculateur de Coût de Road Trip

Total a road trip budget: gas, hotels, and food, in one shot.

Calculateur de Coût de Recharge VE

See what charging your electric vehicle actually costs per month at home rates.

Calculateur de Coût de Recharge Tesla

Estimate weekly and yearly home charging cost for your Tesla model.

Calculateur de Dépréciation de Voiture

Estimate your car's current value after years and mileage.

Calculateur de Covoiturage

See how much carpooling cuts your annual commute cost.

Calculateur de Taille de Soutien-gorge

Calculate your bra size from band and bust measurements.

Calculateur de Couverture Lestée

Find your ideal weighted blanket weight using the 10% rule.

Calculateur de Taille de Nappe

Find the right tablecloth size for any table and desired drop length.

Calculateur de Jupe Cercle

Compute fabric size and waist radius for a full circle skirt.

Calculateur de Coût de l'Électricité

Compute the monthly cost of running any appliance from wattage and use.

Calculateur de Couverture de Peinture

Estimate how many gallons of paint your room needs.

Calculateur de Revêtement de Sol

Compute square footage and material needed including waste factor.

Calculateur de Carrelage

Count tiles needed for any room with waste built in.

Calculateur de Prêt Immobilier

Estimate monthly payments including principal, interest, taxes, and insurance.

Solar Panel Savings Calculator

Estimate annual savings and payback period for a residential solar install.

Calculateur de BTU de Climatiseur

Find the BTU rating you need to properly cool a room.

Calculateur de Pourboire

Compute the tip and per-person split for any bill.

Calculateur de Remise

Find the sale price and savings for any percent off.

Salaire en Taux Horaire

Convert an annual salary into an hourly rate.

Taux Horaire en Salaire

Convert an hourly wage to monthly and annual income.

Calculateur de ROI

Compute return on investment and annualized return.

Calculateur de Marge Bénéficiaire

Compute gross profit and margin from revenue and cost.

Calculateur de Tarif Freelance

Work out the hourly rate you need to charge to hit your income goal.

Calculateur Pomodoro

Plan focus blocks and breaks using the 25/5 pomodoro technique.

Calculateur d'Heures Supplémentaires

Compute weekly pay with overtime at 1.5x past 40 hours.

Calculateur de Coût de Réunion

Calculate what a meeting truly costs in payroll dollars.

Calculateur d'Âge

Calculate exact age in years, months, and days from any date of birth.

Jours avant Noël

How many days, hours, and minutes are left until Christmas Day?

Calculateur de Cycle de Sommeil

Find optimal wake-up or bedtime based on 90-minute sleep cycles.

Date d'Accouchement Prévue

Estimate your due date and current pregnancy week from your last period.

Calculateur de Jours Ouvrables

Count working days (Mon–Fri) between any two dates.

Pile ou Face

Flip a virtual coin — heads or tails, fair random.

Lanceur de Dés

Roll any combination of D4, D6, D8, D10, D12, D20, or D100.

Générateur de Nombres Aléatoires

Generate random numbers in any range, with or without duplicates.

Générateur Oui ou Non

Let randomness decide. A fair coin flip with words.

Calculateur de Signe du Zodiaque

Look up your Western astrological sign from your date of birth.

Calculateur de Compatibilité Amoureuse

Just-for-fun compatibility score from two names.

Calculateur du Coût de Douche

Compute the yearly cost of your showers in water and energy.

Calculateur de Crème Solaire

How much sunscreen you actually need per day at the beach.

Calculateur de Temps de Lecture

Estimate how long a book or article will take to read.

Calculateur de Vitesse de Livre Audio

See how much time you save listening at higher playback speeds.

Calculateur IMC

Body Mass Index from height and weight, with the standard category breakdown.

Calculateur de Calories

Estimate daily calorie needs via Mifflin-St Jeor BMR and activity multiplier.

Calculateur d'Apport en Eau

Estimate your daily water target adjusted for activity and climate.

Pas en Miles

Convert step counts to miles using your stride length or height estimate.

Calculateur de Pourcentage

Solve any percentage question: X% of Y, X is what % of Y, percent change.

Calculateur de Pieds Carrés

Compute area for rectangles, circles, and triangles in square feet.

Convertisseur de Chiffre Romain

Convert any number 1–3999 to a Roman numeral and back.

Binaire en Décimal

Convert between binary and decimal in either direction.

Calculateur de Fractions

Add, subtract, multiply, or divide two fractions with auto-simplification.

Currency Converter

Quick approximate currency conversion using static reference rates.

Traducteur Pig Latin

Translate any text into Pig Latin instantly.

Texte à l'Envers

Flip your text upside down with Unicode tricks.

Compteur de Mots

Count words, characters, and reading time for any text.

Horsepower Calculator

Compute horsepower from engine torque and RPM using the standard SAE formula.

Tire Size Calculator

Decode a tire size into overall diameter, sidewall height, and circumference.

Compression Ratio Calculator

Engine static compression ratio from bore, stroke, deck, gasket, and chamber volumes.

Rpm Calculator

Compute engine RPM at a given speed from tire size, gear, and final drive.

0 60 Calculator

Estimate 0-60 mph time from horsepower, weight, and drivetrain.

Wheel Horsepower Calculator

Estimate WHP at the wheels after drivetrain losses.

Turbo Size Calculator

Estimate compressor airflow target for a turbo build.

Boost Horsepower Calculator

Estimate boosted HP from a naturally-aspirated baseline and boost pressure.

Bsfc Calculator

Compute brake-specific fuel consumption from fuel flow and brake horsepower.

Wheel Offset Calculator

Compute wheel offset in mm from width and backspacing.

Speedometer Gear Calculator

Estimate the right driven-gear tooth count for accurate speedometer reading.

Boat Speed Calculator

Estimate top boat speed from HP and weight using Crouch's planing formula.

Nautical Mile Calculator

Convert between nautical miles, statute miles, and kilometers.

Crosswind Calculator

Resolve runway wind into headwind and crosswind components.

Flight Radiation Calculator

Estimate cosmic-ray radiation dose for a flight.

Gvwr Calculator

Total your truck's loaded weight and see which GVWR class it falls into.

Fuel Pump Calculator

Estimate fuel flow demand and per-injector load for a given HP target.

Traffic Density Calculator

Compute traffic density (vehicles per mile) from flow rate and speed.

Winch Size Calculator

Find the minimum winch capacity for your vehicle and terrain.

Calculateur de Coût de Stationnement

Compare pay-as-you-go parking against a monthly pass.

Calculateur de Coût de Vidange

Compare DIY vs shop oil changes over a year of driving.

Car Insurance Estimator

Rough estimate of annual auto insurance premiums by age, vehicle, and coverage.

Calculateur de Vitesse de Vélo

Compute road-bike speed from cadence, gearing, and wheel size.

Train Vs Drive Calculator

Compare driving cost against a train ticket, including the value of your time.

Empreinte Carbone de Voyage

Estimate CO₂ emissions for any trip by mode and distance.

Uber Vs Car Calculator

Compare monthly rideshare spend against the full cost of car ownership.

Miles To Dollars Calculator

Estimate the cash value of your airline miles by program and redemption.

Calculateur de Miles par An

Total annual driving miles from commuting, leisure, and road trips.

Engine Hours To Miles

Convert engine hours (on a marine or industrial engine) to equivalent automotive miles.

Calculateur de Distance

Solve any of distance, speed, or time given the other two.

Toll Cost Calculator

Add up weekly, monthly, and annual toll spend — and the E-ZPass discount.

Calculateur de Temps de Vol

Estimate flight time from distance, cruise speed, and layover length.

Ticket Optimizer

Should you buy event tickets now or wait? A simple heuristic by time-to-event and category.

Conversion de Pointure

Convert between US Men, US Women, UK, EU, and CM shoe sizes.

Convertisseur de Taille de Bague

Convert between US, UK, EU, and inner diameter / circumference ring sizes.

Calculateur de Taille de Robe

Find your US, UK, and EU dress size from bust, waist, and hip measurements.

Calculateur de Taille de Jean

Get your W × L jeans size from waist and inseam measurements.

Calculateur de Taille de Chapeau

Find your hat size in numeric, fitted, and S/M/L formats from head circumference.

Calculateur de Taille de Ceinture

Find the belt size to order from your pants waist or measured waist.

Calculateur de Taille de Veste

Find your jacket size and length from chest, height, and weight.

Calculateur de Taille de Gants

Find your glove size from hand circumference at the knuckles.

Calculateur de Taille de Chaussettes

Convert shoe size to sock size (S/M/L/XL).

Calculateur de Taille de T-shirt

Get your t-shirt size from chest and waist measurements.

Calculateur de Taille de Pantalon

Get your W × L pants size and a hip-to-waist ratio flag.

Convertisseur de Tailles de Vêtements

Convert women's top sizes across US, UK, EU, AU, IT, FR, and JP.

Pointure US vers UK

Convert US shoe sizes to UK in either men's or women's sizing.

Pointure UK vers US

Convert UK shoe sizes to US in either men's or women's sizing.

Pointure Homme vers Femme

Convert between men's and women's US shoe sizes (1.5-size offset).

Calculateur de Pointure Enfant

Convert measured foot length to US toddler/youth shoe size.

Calculateur de Laine

How many skeins you need for a project, with a 10% safety buffer.

Convertisseur de Taille d'Aiguilles à Tricoter

Convert knitting needle sizes between US, metric (mm), and old UK numbering.

Calculateur de Bordure de Quilt

Compute strips and yardage for quilt binding.

Calculateur de Triangle Demi-Carré

Cut size and square count for half-square triangles.

Calculateur de Panneaux de Rideau

Compute panel width and required fabric for window curtains.

Calculateur de Longueur d'Élastique

Find elastic length for waistbands, cuffs, and necklines.

Calculateur de Fil à Coudre

Estimate thread consumed by a seam from length and stitch type.

Calculateur de Longueur de Lacets

Find the right shoelace length for your shoe and lacing style.

Calculateur de Chaussettes Perdues

Estimate how many socks you've lost to the laundry over the years.

Calculateur de Bikini

Get top and bottom bikini sizes from bra size and hip measurement.

Calculateur de Papier Peint

Calculate rolls of wallpaper needed for a room, with waste and pattern repeat.

Calculateur de Capacité de Location

Check if your target rent fits the 30% rule and standard DTI limits.

Coût de Rénovation Maison

Get a price range for kitchen, bath, basement, and other renovations.

Calculateur de Coût de Déménagement

Estimate the cost of a local, long-distance, or interstate move.

Calculateur de Taille de Pelouse

Compute lawn area in square feet and acres, plus seed and mowing estimates.

Calculateur de Coût de Clôture

Estimate fence cost by perimeter, material, height, and gate count.

Storage Unit Size

Pick the right storage unit size for your home and items.

Taille du Sapin de Noël

Find the right tree height and width for your room.

Durée de Combustion de Bougie

Estimate how many hours a candle will burn from size, wick count, and wax type.

Valeur R d'Isolation

Find recommended R-value and additional insulation needed by climate zone.

Dumpster Size Calculator

Find the right roll-off dumpster size for your project.

Internet Speed Cost

See $-per-Mbps and whether your plan suits your usage.

Water Bill Calculator

Estimate monthly water usage and cost from household activity.

Calculateur GPA

Calculate your weighted GPA across up to 6 courses, with letter grades and credit hours.

Calculateur de Notes

Compute your weighted course grade across up to 5 assignments.

Calculateur de Score de Test

Compute percentage and letter grade from correct answers.

Calculateur d'Heures de Travail

Daily, weekly, and monthly hours from start time, end time, and breaks.

Calculateur de Facture

Subtotal, discount, tax, and total for up to 5 line items.

Calculateur de Seuil de Rentabilité

Units and revenue needed to cover fixed and variable costs.

Compteur de Caractères

Characters, words, Twitter remaining, and SMS segments for any text.

Vérificateur de Force de Mot de Passe

Score a password's strength locally based on length, variety, and patterns.

Convertisseur de Taille de Police

Convert between px, pt, em, rem, vw, and percent at a chosen base.

Sat Score Calculator

Approximate scaled SAT scores from raw section scores.

Nombres en Lettres

Spell out any number up to a trillion in English.

Générateur de Texte Inversé

Reverse a string character-by-character or word order.

Nato Phonetic Alphabet

Spell any word using the NATO phonetic alphabet.

Calculateur de Temps d'Étude

Plan study hours per subject given an exam date and difficulty.

Convertisseur de Fuseau Horaire

Convert a time between major world time zones.

Calculateur de Date de Retraite

Find your retirement date and time remaining based on age and country.

Jours avant l'Anniversaire

Count down to your next birthday from today's date.

Calculateur de Jours de Travail

Count working days between two dates, excluding US federal holidays.

Calculateur d'Heure du Coucher

Find the best bedtimes to wake refreshed at a target time.

Calculateur d'Heure de Réveil

Find the best wake times after a chosen bedtime.

Minuteur de Compte à Rebours

Count down the days, hours, and minutes to any future date.

Calculateur d'Il Y A Combien de Temps

Count years, months, days, weeks, and hours since a past date.

Calculateur d'Âge Coréen

Convert international age to traditional Korean age.

Calculateur de Phase Lunaire

Find the moon phase, illumination, and next full moon for any date.

Palindrome Date Finder

Find all palindrome dates in a given year.

Calculateur d'Année Bissextile

Check whether a year is a leap year, plus the next and last leap year.

Calculateur de Durée

Difference between two times in hours, minutes, and seconds.

Heure en Décimal

Convert HH:MM to a decimal hour value and back.

Calculateur de Livre Audio

Plan your audiobook reading pace and yearly book goals.

Durée de Série TV

Total runtime of a series across seasons, episodes, and lengths.

Calculateur de Visionnage en Rafale

Find your binge finish date based on daily watch time.

Calculateur de Suspension de Hamac

Hang point height, tree spacing, and strap length for a comfy hammock.

Calculateur de Ballons à Hélium

How many balloons does it take to lift a given weight?

Calculateur de Taille de Tente

Find the right tent capacity for your campers, gear, and style.

Calculateur de Numérologie

Compute Life Path and Name numbers from your DOB and full name.

Générateur de Nombres Porte-bonheur

Generate lottery-style numbers seeded by your name and today's date.

Calculateur de Jours Minecraft

Convert between real minutes and Minecraft in-game days.

Robux en USD

Convert Robux to dollars (and back) at both direct buy and DevEx rates.

Calculateur de Cotes au Poker

Rough heads-up and multi-way win probability by hole-card category.

Calculateur de Classement d'Échecs

Compute your new Elo after a single game vs an opponent.

Calculateur de Protéines

Daily protein target by body weight, activity level, and goal.

Calculateur de Macros

Daily calories, protein, fat, and carb targets from your body and goal.

Calculateur de Masse Grasse

Estimate body fat percentage with the US Navy method.

Calculateur de Poids Idéal

Compare your weight to Devine, Robinson, Miller, Hamwi, and healthy-BMI ranges.

Calculateur d'Allure de Course

Find pace, time, or distance from any two of the three.

Calories Brûlées

Calories burned for any activity using MET values.

Diaper Calculator

Estimate diapers needed and cost by baby's age and brand.

Cost Of Having Baby

Total estimated cost of delivery plus the first five years.

Expiration Date Calculator

Estimate expected expiration date by item type.

Battery Charge Time

Estimate hours to charge a battery from current to target level.

Linear Inches Calculator

Total linear inches and airline carry-on / checked classification.

Headphone Power

How much amp power your headphones need to hit a target SPL.

Well Volume Calculator

Compute gallons of water in a well from diameter and depth.

Garbage Bag Size

Find the right gallon-rated bag size for your trash can.

Picture Frame Calculator

Compute mat, frame, and overall sizes for any artwork.

Calculateur de Pieds Cubes

Compute volume in cubic feet, yards, meters, and liters.

Hex en Décimal

Convert between hexadecimal and decimal, with binary preview.

Calculatrice Scientifique

Evaluate math expressions with sin/cos/tan, log, sqrt, pi, e, and more.

Note en GPA

Convert a letter grade or percentage into GPA points.

Calculateur de Défi de Lecture

Track progress on a yearly reading goal and project your finish date.

Combien de Temps pour Lire un Livre

Estimate hours to read a book at your pace.

Pages par Heure

Measure your actual reading speed in pages per hour and words per minute.

Nombre de Mots d'un Livre

Typical word counts and page estimates by genre.

Calculateur d'Objectif Goodreads

Are you on pace for your Goodreads reading challenge?

Nombre de Pages Kindle

Convert KOLL Kindle pages to print pages and words.

Calculateur Bain vs Douche

Find out whether baths or showers are cheaper for you over a year.

Calculateur de Croissance des Cheveux

Months to grow your hair to a target length.

Calculateur de Produits de Beauté

Annual cost of your beauty routine.

Calculateur de Dentifrice

Tubes per year and annual toothpaste cost.

Temps de Lavage des Mains

WHO-recommended hand-washing time and song references.

Calculateur du Coût des Soins de la Peau

Roll up the per-day and per-year cost of your skincare routine.

Longévité du Parfum

How many weeks a perfume bottle will last at your usage.

Coût de la Coloration

Annual hair color cost by method and frequency.

Calculateur de Coût de Maquillage

Annual cost of your makeup kit.

Calculateur d'Utilisation de Savon

How long a bar of soap lasts and the monthly cost.

Calculateur de Masques

Masks needed per month and annual cost by type.

Suis-je Riche

Where your income ranks against US (and rough global) distributions.

Net Worth Calculator

Compute net worth from assets minus liabilities; compare to age peers.

Calculateur de Score de QI

Rough IQ estimate from a raw test score — strictly informal.

Calculateur de Fantasy Football

Score a player line in standard, PPR, or half-PPR scoring.

Impact de l'Interdiction des Réseaux Sociaux

Estimate reach and revenue lost if your account is banned.

Alternatives au Temps sur TikTok

What you could do instead of scrolling TikTok for X minutes a day.

Alternatives au Temps sur les Réseaux Sociaux

Yearly hours sunk into social media — and what they could become.

Pixels To Inches

Convert between pixels and physical inches at any PPI.

Pounds And Ounces

Combine pounds and ounces into total weight in oz, grams, kg, and decimal lbs.

Feet And Inches Calculator

Convert, add, or subtract feet-and-inches values.

Height In Inches

Convert feet+inches height to inches, cm, and meters with a percentile note.

Acreage Calculator

Compute area in acres from any shape's dimensions.

Land Area Calculator

Land area in acres, hectares, bigha, katha, gaj, cent, and marla.

Lot Size To Acres

Convert lot size in square feet (or L×W) to acres and other units.

Lot Size To Sq Feet

Convert acres or other area units to square feet and find the side of a square lot.

Scale Calculator

Solve scaled, real, or ratio given the other two.

Download Time Calculator

How long a file will take to download at a given connection speed.

Torque To Hp

Compute horsepower from torque and RPM (or torque from HP and RPM).

Watts To Amps

Compute amperage from wattage at a chosen voltage.

Amps To Watts

Compute wattage from amperage at a chosen voltage.

Kwh To Kw

Convert between energy (kWh) and average power (kW) over a time period.

Dbm To Watts

Logarithmic conversion between dBm and watts.

Rms To Watts

Compute RMS and peak power from RMS voltage and impedance.

Joules To Volts

Convert energy and charge (or capacitance) into voltage.

Barometric Pressure

Pressure converted across all weather units with a forecast hint.

Ppm Calculator

Parts-per-million across PPM, PPB, ppt, percent, and mg/L.

Hardness Conversion

Convert between Rockwell C, Rockwell B, Brinell, Vickers, and Shore D.

Calculateur de Ratio

Simplify, scale, percentage-ize, or split a ratio.

Imperial To Metric

One-stop imperial→metric conversion across length, weight, volume, temperature, speed.

Metric To Imperial

Convert metric to imperial across length, weight, volume, temperature, and speed.

Dimensional Analysis

Educational unit-conversion chain across length, weight, volume, speed, temperature.

Calculateur de Score ACT

Convert ACT raw section scores to scaled 1–36 scores and a composite.

Calculateur de GPA Universitaire

Compute term and cumulative GPA on the 4.0 scale.

Calculateur de Note Finale

Find the score you need on the final exam to reach your target grade.

Calculateur de Courbe de Notes

Apply square-root, flat-point, or scale-to-100 curves to a test score.

Calculateur d'Année de Diplôme

Find your high-school and college graduation years.

Calculateur de GWA

Compute General Weighted Average on the Philippine 1.0–5.0 scale.

Calculateur de GPA du Lycée

Weighted and unweighted GPA with honors/AP/IB course bonuses.

Calculateur de Score IELTS

Convert IELTS raw scores to band scores and an overall band.

Calculateur de Facteur d'Impact

Compute a journal's impact factor from citations and article count.

Calculateur de Score PTE

Weighted overall PTE Academic score with CEFR equivalent.

Calculateur de Note de Semestre

Weighted course grade across all assignments.

Calculateur de Note de Test

Percentage and letter grade from correct answers, with optional penalties.

Calculateur de GPA Pakistan

CGPA on the Pakistani HEC 4.0 scale from marks and credit hours.

Calculateur d'Espacement de Salle de Classe

Maximum desks in a room given social-distancing spacing.

Calculateur de Rapport d'Aspect

Find an aspect ratio from dimensions, or solve a missing dimension.

Calculateur de Taille de Fichier Image

Estimate image file size by dimensions, bit depth, and format.

Calculateur de PPI

Pixels per inch from screen resolution and diagonal size.

Calculateur de Taille d'Écran

Width, height, and area from a diagonal and aspect ratio.

Calculateur de Taille de TV

Recommended TV diagonal for your seating distance.

Calculateur de Hauteur de Fixation TV

Ideal wall height to mount a TV for eye-level viewing.

Calculateur de Taille de Fichier Vidéo

Estimate video file size from duration, resolution, and codec.

Calculateur d'Exposition

Compute exposure value from aperture, shutter speed, and ISO.

Calculateur de Profondeur de Champ

Near, far, and total depth of field for any lens setup.

Calculateur de Distance Focale

Focal length from sensor size and field of view, plus 35mm equivalent.

Calculateur de Facteur de Recadrage

Crop factor and 35mm-equivalent focal lengths from sensor dimensions.

Calculateur d'Échelle de Résolution

Scale a resolution by a factor and see the pixel-count change.

Calculateur de Time-lapse

Photos, video length, and storage for a time-lapse shoot.

Calculateur de Vitesse d'Obturation

Recommended shutter speed for handheld, motion, or astro shots.

Calculateur de Champ de Vision

Horizontal, vertical, and diagonal angle of view for a lens.

Calculateur de Distance Hyperfocale

The focus distance that maximizes depth of field.

Calculateur de Pixels en Taille d'Impression

Maximum print size for an image at a chosen DPI.

Calculateur de Projecteur

Throw distance or screen size from a projector's throw ratio.

Calculateur de Ratio d'Image

Resize an image keeping its aspect ratio.

Calculateur de Ratio de Contraste

Display contrast ratio from white and black luminance.

Calculateur de Grossissement d'Objectif

Magnification and reproduction ratio for a lens at a subject distance.

Calculateur de Photo sans Clignement

How many shots you need for a blink-free group photo.

Calculateur d'Images en Timecode

Convert a frame number to HH:MM:SS:FF timecode.

Calculateur de Timecode en Images

Convert HH:MM:SS:FF timecode to a total frame count.

Calculateur de Pellicule

Rolls, frames, and cost for an analog film shoot.

Calculateur d'Exagération Verticale

Vertical exaggeration factor for profiles and cross-sections.

Calculateur de Rendu 3D

Total render time and completion date for a 3D project.

Calculateur de Débit de Streaming

Recommended streaming bitrate and required upload speed.

Calculateur de BPM

Calculate tempo (BPM) from a beat count and duration.

Calculateur de Fréquence de Notes

Frequency of any musical note in equal temperament.

Calculateur d'Intervalle Musical

Name the interval between two notes and its frequency ratio.

Calculateur de Gamme Musicale

Generate the notes of any scale from a root note.

Calculateur d'Accords

Notes and intervals for any chord from a root note.

Trouveur d'Accords

Identify a chord from a set of notes.

Calculateur d'Inversion d'Accords

Reorder a chord's notes into root, 1st, 2nd, or 3rd inversion.

Générateur de Progression d'Accords

Build a chord progression in any key.

Transpositeur d'Accords

Transpose a chord progression to a new key.

Calculateur de Transposition Musicale

Transpose a note up or down by a number of semitones.

Calculateur de Demi-tons

Count the semitones between two notes.

Calculateur d'Armature

Sharps, flats, and relatives for any major or minor key.

Calculateur de Durée Musicale

Total playing time from BPM, time signature, and bar count.

Calculateur de Delay et Reverb

Note-synced delay times in milliseconds for a given tempo.

Calculateur de Frettes

Distance of each fret from the nut for a given scale length.

Calculateur de Tension de Cordes de Guitare

Approximate string tension from gauge, scale length, and pitch.

Calculateur de Série Harmonique

First 16 harmonics of a fundamental frequency.

Calculateur de Tessiture Vocale

Classify a voice type from the lowest and highest comfortable notes.

Calculateur de Caisson d'Enceinte

Recommended enclosure volume for a driver.

Calculateur de Longueur d'Évent

Port length for a vented speaker enclosure.

Calculateur de Taille de Fichier Audio

Estimate audio file size by sample rate, bit depth, and channels.

Calculateur d'Autonomie de Batterie

Estimate device runtime from battery capacity and consumption.

Calculateur de Capacité de Batterie

Convert between Ah, Wh, and joules for a battery.

Calculateur de Taille de Batterie

Minimum battery capacity for a target runtime.

Calculateur de Temps de Vol de Drone

Estimate drone flight time from battery and motor draw.

Calculateur de Moteur de Drone

Thrust per motor and thrust-to-weight ratio for a multirotor.

Calculateur de Cycle de Service

Duty cycle, frequency, and average voltage of a PWM signal.

Calculateur d'eDPI

Effective DPI for FPS mouse sensitivity comparison.

Calculateur d'Entropie de Mot de Passe

Estimate password strength in bits of entropy and crack time.

Calculateur RAID

Usable storage and fault tolerance for a RAID array.

Calculateur chmod

Convert Unix file permissions to octal and symbolic notation.

Calculateur de Sous-réseau IP

Network, broadcast, host range, and host count for an IPv4 subnet.

Calculateur CIDR

Parse CIDR notation into network, range, and host count.

Calculateur de Bande Passante

Required bandwidth to transfer a file in a target time.

Calculateur de Temps d'Envoi

How long a file takes to upload at a given speed.

Calculateur de Disponibilité

Allowed downtime for a given uptime percentage.

Calculateur de Transfert de Données

Transfer time across USB, Ethernet, Wi-Fi, 5G, and fiber.

Calculateur de Débit en Bauds

Effective data throughput of a serial connection.

Convertisseur d'Adresse IP

Convert an IPv4 address between dotted-decimal, integer, and hex.

Encodeur Base64

Encode text to Base64 or decode Base64 back to text.

Convertisseur ASCII

Convert text to ASCII codes and back.

Calculateur de Code de Hamming

Add Hamming parity bits to a binary data word.

Calculateur de Distance de Hamming

Count differing bits between two binary strings.

Calculateur de Bit de Parité

Compute the parity bit for a binary data word.

Calculateur de Portes Logiques

Evaluate any 2-input logic gate and show its truth table.

Calculateur de Gain d'Ampli Op

Voltage gain of inverting and non-inverting op-amp circuits.

Calculateur de Largeur de Piste PCB

Minimum trace width for a current using the IPC-2221 standard.

Calculateur de Résistance de Piste PCB

Resistance and voltage drop of a PCB copper trace.

Calculateur de Courant de Piste PCB

Maximum current a PCB trace can carry (IPC-2221).

Calculateur d'Impédance PCB

Characteristic impedance of a microstrip PCB trace.

Calculateur d'Impédance de Câble

Characteristic impedance of a coaxial cable.

Calculateur de Délai de Propagation

Signal travel delay through a trace or cable.

Calculateur LM317

Resistor value for a target LM317 regulator output voltage.

Calculateur de Latence RAM

True memory latency in nanoseconds from CL and frequency.

Calculateur d'Adaptation d'Impédance

L-network component values to match two impedances.

Calculateur de Distorsion Harmonique Totale

THD from a fundamental and its harmonic amplitudes.

Convertisseur d'Unités RF

Convert RF power between dBm, watts, and dBW.

Calculateur de Chiffre de Vigenère

Encrypt or decrypt text with the Vigenère cipher.

Convertisseur Hex en Texte

Decode a hexadecimal string into readable text.

Calculateur à Virgule Flottante

Show the IEEE 754 single-precision representation of a number.

Calculateur GSD

GSD for aerial/drone mapping from sensor, lens, and altitude.

Calculateur de Produit Bande Passante × Délai

Data in flight on a network path — the ideal TCP window size.

Calculateur KD

Compute your kill/death ratio and KDA from kills, deaths, and assists.

Générateur de Cercles Minecraft

Generate the block count and shape data for a Minecraft circle of any diameter.

Calculateur de Piles Minecraft

Work out full stacks, leftovers, and chest space for any pile of Minecraft items.

Calculateur de Portail du Nether

Convert Overworld coordinates to the Nether and back at Minecraft's 1:8 ratio.

Localisateur de Portail de l'End

Estimate how far a Minecraft stronghold sits from the world origin by its ring.

Calculateur de Bonbons Pokémon GO

Find how much candy you need to evolve a Pokémon and how far you must walk for it.

Calculateur de Blocs de Pyramide

Count the blocks needed to build a solid, hollow, or stepped pyramid.

Calculateur de Dégradation Rust

Estimate how much health a Rust structure loses to decay while you are offline.

Calculateur de Probabilités d'Imposteur

Work out your chance of being the impostor in a social-deduction party game.

Calculateur CBM

Calculate cubic metres (CBM) of a shipment from carton dimensions and quantity.

Calculateur de Poids Volumétrique

Find the billable weight of a parcel by comparing actual weight to dimensional weight.

Calculateur DPMO

Calculate Defects Per Million Opportunities and the matching Six Sigma level.

Calculateur de Classe de Fret

Determine NMFC freight class from a shipment's weight and dimensions by density.

Calculateur de Palettes

Work out how many boxes fit on a pallet, with layers and total stack weight.

Calculateur de Point de Commande

Calculate the inventory reorder point from demand, lead time, and safety stock.

Calculateur de Temps Takt

Calculate takt time — the production pace needed to meet customer demand.

Calculateur de Chargement de Conteneur

Estimate how many shipping containers a cargo load needs by volume and weight.

Compte à Rebours de Noël

See exactly how many days, weeks, and shopping days are left until Christmas.

Calculateur de Pâques

Find the date of Easter Sunday for any year using the Gregorian algorithm.

Calculateur de Bonhomme de Neige

Size the three balls of a snowman and estimate how much snow you need.

Calculateur d'Apocalypse Vampire

Model how fast vampires could convert the human population through exponential growth.

Calculateur d'Invasion Zombie

Estimate how fast a zombie outbreak spreads using a simplified infection model.

Calculateur de Trick or Treat

Estimate the candy haul and walking distance from a night of trick-or-treating.

Calculateur de Noël Blanc

See the historical probability of snow on the ground on Christmas Day by city.

Convertisseur de Calendrier Maya

Convert any Gregorian date to the Maya Long Count, Tzolkin, and Haab calendars.

Calculateur de Résolutions du Nouvel An

Plan a resolution: see days left in the year and total hours you can commit.

Calculateur de Refroidissement Éolien

Calculate the NWS wind chill temperature and frostbite risk from temp and wind speed.

Calculateur de Précipitations

Calculate the volume of water collected from rainfall over a given area.

Calculateur de Pluie en Neige

Convert rainfall to expected snowfall using temperature-based snow ratios.

Calculateur de Bain de Soleil

Estimate safe sun exposure time from skin type, UV index, and sunscreen SPF.

Calculateur de Tremblement de Terre

Calculate the energy released by an earthquake and its intensity at a distance.

Calculateur d'Antipodes

Find the exact point on the opposite side of the Earth from any coordinates.

Calculateur d'Azimut

Calculate the compass bearing (azimuth) from one coordinate to another.

Calculateur de Distance Latitude-Longitude

Calculate the great-circle distance between two coordinates with the Haversine formula.

Calculateur de Taux d'Engagement

Calculate social media engagement rate from followers, likes, comments, and shares.

Calculateur de Durée de Bouteille d'Oxygène

Estimate how long a medical oxygen cylinder lasts at a given flow rate.

Calculateur de Poids de Diamant

Estimate the carat weight of a diamond from its shape and millimetre measurements.

Calculateur d'Écart de Rémunération

Calculate the pay gap between two salaries as a percentage and dollar difference.

Calculateur PERT

Calculate a PERT three-point estimate with standard deviation and variance.

Calculateur NaNoWriMo

Track your novel-writing pace and find the daily word count needed to hit your goal.

Calculateur de Pâte à Sel

Scale a salt dough recipe up or down for any number of batches.

Calculateur de Pourboire pour Pizza

Split a pizza order with tip across friends and see the per-person cost.

Calculateur de Matched Betting

Calculate the lay stake, liability, and locked-in profit for a matched bet.

Calculateur de Jour de la Semaine

Find the day of the week for any date, plus day number and week of the year.

Calculateur de Durée du Processus de Recrutement

Estimate total time-to-hire by adding up each stage of your recruitment process.

Calculateur d'Aquarium

Calculate aquarium volume, full weight, and fish capacity from tank dimensions.

Calculateur d'Épaisseur du Verre d'Aquarium

Estimate the minimum glass thickness needed for an aquarium of a given size.

Calculateur de Bac à Sable

Calculate how much sand a sandbox needs and the number of bags to buy.

Chiffre de César

Encrypt or decrypt text with a Caesar cipher and see all 25 brute-force shifts.

Calculateur de Drapeau des USA

Calculate every dimension of a US flag from its hoist height per Executive Order 10834.

Calculateur de PV 5e

Calculate a D&D 5e character's hit points by class, level, and Constitution modifier.

Calculateur de Rencontres 5e

Rate a D&D 5e combat encounter as easy, medium, hard, or deadly by XP thresholds.

Calculateur d'Achat de Points 5e

Track the 27-point budget for D&D 5e ability scores and see the modifiers.

Calculateur d'EV au Poker

Calculate the expected value of a poker call from pot size, bet, and your equity.

Minuscules en Majuscules

Convert any lowercase text to UPPERCASE instantly in your browser.

Convertisseur en Casse Capitale

Capitalize the first letter of every word, including short words and articles.

Convertisseur en Casse de Phrase

Capitalize the first letter of each sentence and lowercase the rest.

Générateur de Petites Capitales

Convert text to ꜱᴍᴀʟʟ ᴄᴀᴘs using Unicode small-capital letters.

Générateur de Texte en Petit

Convert text to ˢᵐᵃˡˡ superscript-style letters for bios and captions.

Générateur de Texte Barré

Add a Unicode strikethrough line through any text you can copy anywhere.

Générateur d'Indice

Convert numbers and letters to Unicode subscript characters.

Générateur d'Exposant

Convert numbers and letters to Unicode superscript characters.

Générateur de Police Gothique

Convert text to 𝔤𝔬𝔱𝔥𝔦𝔠 Fraktur letters you can copy and paste.

Générateur de Texte Miroir

Reverse text and create a mirrored backwards version you can copy.

Convertisseur de Chiffres en Lettres

Decode a number sequence into letters using A=1, B=2 … Z=26.

Convertisseur de Lettres en Chiffres

Encode letters into numbers using A=1, B=2 … Z=26.

Identificateur de Hash

Identify a hash type from its length and character set — MD5, SHA, bcrypt and more.

Calculateur de Rapport 16:9

Calculate the 16:9 height for any width — the standard widescreen video ratio.

Calculateur de Rapport 16:10

Calculate the 16:10 height for any width — common on laptop and monitor screens.

Calculateur de Rapport 4:3

Calculate the 4:3 height for any width — the classic fullscreen TV ratio.

Calculateur de Rapport d'Aspect CSS

Generate the CSS aspect-ratio property and padding-top percentage for any ratio.

Calculateur de Rapport d'Aspect Pixel

Calculate the pixel aspect ratio (PAR) from display and pixel dimensions.

Calculateur de Rapport d'Aspect Portrait

Calculate portrait-orientation heights at common ratios like 2:3, 3:4, and 9:16.

Calculateur de Rapport d'Écran

Find the simplified aspect ratio of any screen from its width and height.

Jours avant l'Automne

Count down the days until the first day of autumn (September 22).

Jours avant la Saint-Valentin

Count down the days remaining until Valentine's Day on February 14.

Compte à Rebours du Nouvel An

Count down the days, hours, and minutes until New Year's Day.

Calculateur de Poids en Carats

Convert gemstone weight in grams to carats and points.

Calculateur de Carats de Diamant

Convert diamond weight to carats and estimate carat weight from a round diamond's diameter.

Conversion mm vers Carats

Estimate a gemstone's carat weight from its millimetre diameter by shape.

En Quelle Classe J'étais

Find which US school grade you were in during any given year.