Calculatrices et Convertisseurs Gratuits
Calculatrices et convertisseurs instantanés. Calculez l'IMC, les pourcentages, convertissez les devises et plus — gratuit.
Calculateur de Pourcentage
Calculez les pourcentages facilement. Trouvez le pourcentage d'un nombre, le changement de pourcentage, l'augmentation, la diminution et les conversions de ratios.
Calculateur d'Âge
Calculez votre âge exact en années, mois, jours, heures et minutes. Trouvez l'âge entre deux dates avec une précision parfaite.
Calculateur d'IMC
Calculez votre indice de masse corporelle avec la taille et le poids. Obtenez la catégorie IMC, la plage de poids santé et des informations de santé.
Convertisseur d'Unités
Convertissez entre les unités de longueur, poids, volume, surface et plus. Outil complet de conversion d'unités avec plus de 100 unités.
Convertisseur de Vitesse
Convertissez entre les unités de vitesse comme mph, km/h, noeuds et m/s. Calculez les conversions de vitesse pour toute mesure de vélocité.
Convertisseur de Stockage de Données
Convertissez entre les unités de stockage de données. Calculez les octets, Ko, Mo, Go, To et plus avec options binaire et décimale.
Convertisseur de Systèmes de Numération
Convertissez entre les systèmes décimal, binaire, octal et hexadécimal. Traduisez les nombres entre différentes bases instantanément.
Convertisseur de Chiffres Romains
Convertissez entre les chiffres romains et les nombres arabes. Traduisez les nombres en format romain et inversement instantanément.
Convertisseur de Température
Convertissez entre Celsius, Fahrenheit et Kelvin. Conversion de température instantanée avec affichage des formules.
Convertisseur de Fuseaux Horaires
Convertissez les heures entre les fuseaux horaires du monde. Planifiez des réunions à travers les fuseaux horaires avec cet outil de conversion facile.
Convertisseur de Devises
Convertissez entre les devises du monde avec les taux de change en direct. Calculez les conversions monétaires pour plus de 150 devises instantanément.
Calculateur de Prêt/EMI
Calculez les mensualités de prêt, les intérêts totaux et le tableau d'amortissement. Planifiez vos hypothèques, prêts auto et prêts personnels facilement.
Calculateur de Remise
Calculez les prix soldés et les économies des remises en pourcentage. Trouvez le prix final après une ou plusieurs remises.
Calculateur de Pourboire
Calculez les pourboires et partagez les additions facilement. Déterminez les montants de pourboire, les parts par personne et les coûts totaux pour tout groupe.
Calculateur de Moyenne
Calculez votre moyenne à partir des notes et crédits. Prise en charge des calculs de moyenne sur 4.0, pondérée et cumulative.
Convertisseur de Codes Couleur
Convertissez les codes couleur entre HEX, RGB, HSL et CMYK. Traduisez n'importe quelle valeur de couleur vers d'autres systèmes colorimétriques.
Calculateur de Rapport d'Aspect
Calculez les rapports d'aspect pour les images et vidéos. Trouvez les dimensions tout en maintenant les proportions pour n'importe quel écran ou média.
Calculateur de Coût d'Électricité
Calculez les coûts d'électricité pour vos appareils. Estimez la consommation d'énergie et les factures mensuelles d'électricité facilement.
Calculateur de Coût de Carburant
Calculez les coûts de carburant pour n'importe quel trajet. Estimez les dépenses en essence selon la distance, l'efficacité et les prix actuels.
Calculateur de Différence de Dates
Calculez la différence exacte entre deux dates. Trouvez les jours, semaines, mois et années entre n'importe quelles deux dates facilement.
Salary to Hourly Calculator
Convert annual salary to hourly wage, or hourly rate to annual salary. See your pay broken down by hour, day, week, month, and year.
Sales Tax Calculator
Calculate sales tax and total price from any pre-tax amount. Or remove tax from a total to find the original price. Includes all US state tax rates.
Scientific Notation Calculator
Convert numbers to and from scientific notation. Multiply, divide, add, and subtract numbers in scientific notation with step-by-step solutions.
Square Root Calculator
Calculate the square root, cube root, or any nth root of a number instantly. Also computes squares, cubes, and shows nearby perfect squares.
Grade Calculator
Calculate your test grade as a percentage and letter grade. Also compute weighted course grades and find out what score you need on a final exam.
ROI Calculator
Calculate return on investment (ROI) as a percentage. Enter your initial investment and final value to see net profit, ROI, and annualized returns.
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) and daily calorie needs at different activity levels using the Mifflin-St Jeor equation.
Calorie Calculator
Calculate your daily calorie needs based on your stats, activity level, and weight goal. Get macro breakdowns and projected weight change.
Ideal Weight Calculator
Calculate your ideal body weight using four medical formulas: Hamwi, Devine, Robinson, and Miller. See results in kg and lbs plus healthy BMI range.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method with body measurements. Shows fat mass, lean mass, and body fat category.
Calorie Deficit Calculator
Calculate the daily calorie deficit needed to reach your weight loss goal. Set a time target or weekly loss rate and see your projected weight timeline.
Water Intake Calculator
Calculate your recommended daily water intake based on your weight, activity level, and climate. Results shown in liters, fl oz, cups, and glasses.
Sleep Calculator
Calculate the best time to go to bed or wake up based on 90-minute sleep cycles. Wake up refreshed by timing your sleep to complete full cycles.
Pythagorean Theorem Calculator
Calculate any side of a right triangle using the Pythagorean theorem (a² + b² = c²). Find the hypotenuse or any leg with step-by-step solutions.
Circumference Calculator
Calculate the circumference, area, diameter, arc length, and sector area of a circle from radius or diameter. Instant results with formulas shown.
Area Calculator
Calculate the area and perimeter of 7 shapes: rectangle, circle, triangle, trapezoid, parallelogram, ellipse, and regular polygon. Step-by-step formulas.
Quadratic Formula Calculator
Solve any quadratic equation ax² + bx + c = 0 instantly. Finds real and complex roots, discriminant, vertex, and axis of symmetry with step-by-step solutions.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions. Also simplifies fractions and converts results to decimals and mixed numbers.
GCF and LCM Calculator
Find the Greatest Common Factor (GCF) and Least Common Multiple (LCM) of 2–6 numbers using prime factorization with full step-by-step explanations.
Prime Factorization Calculator
Find the prime factors of any number up to 10 billion. Shows prime factorization in exponential form, all divisors, factor pairs, and whether the number is prime.
Average Calculator
Calculate mean, median, mode, range, standard deviation, and more from a list of numbers. Enter values comma-separated or one per line.
Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and view a full amortization schedule. Enter home price, down payment, interest rate, and loan term.
Retirement Calculator
Calculate how much you will have at retirement based on current savings, monthly contributions, annual return rate, and time horizon. Includes inflation adjustment.
Auto Loan Calculator
Calculate your monthly car payment, total cost, and interest for any auto loan. Includes trade-in value, sales tax, and a month-by-month amortization breakdown.
Compound Savings Calculator
Calculate how your savings grow with compound interest over time. Add regular monthly contributions and see interest earned year by year.
Net Worth Calculator
Calculate your net worth by entering all your assets and liabilities. Get a clear picture of your financial health with totals and debt-to-asset ratio.
Paycheck Calculator
Calculate your take-home pay after federal taxes, state taxes, Social Security, Medicare, 401(k), and health insurance deductions. 2024 US tax brackets.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, and other statistics for any dataset. Supports both population (÷N) and sample (÷N−1) formulas.
Z-Score Calculator
Calculate z-scores and find probabilities for normal distributions. Convert raw scores to z-scores or find the probability area under the curve.
Confidence Interval Calculator
Calculate confidence intervals for means and proportions. Choose from 80% to 99.9% confidence levels with automatic z-score lookup.
Probability Calculator
Calculate probabilities for single events, compound events, Bayes' theorem, and binomial distributions. Essential for statistics and data science.
Combination & Permutation Calculator
Calculate combinations C(n,r) and permutations P(n,r) instantly. Find how many ways to choose or arrange items from a set.
Percentile Calculator
Calculate percentiles and quartiles for any dataset. Find the value at a given percentile, or find what percentile rank a specific value falls at.
Margin of Error Calculator
Calculate the margin of error for surveys and polls, or find the sample size needed to achieve a desired margin of error at any confidence level.
Normal Distribution Calculator
Calculate probabilities under the normal distribution curve. Find P(X ≤ x), P(X ≥ x), or P(a ≤ X ≤ b) for any mean and standard deviation.
Right Triangle Calculator
Solve any right triangle given 2 known values: sides a, b, c (hypotenuse) or acute angles A and B. Calculates all sides, angles, area, and perimeter.
Law of Sines Calculator
Solve any triangle using the Law of Sines: a/sin(A) = b/sin(B) = c/sin(C). Works for ASA, AAS, and SSA triangle configurations.
Law of Cosines Calculator
Solve any triangle using the Law of Cosines: c² = a² + b² − 2ab·cos(C). Handles SAS (find side) and SSS (find angles) configurations.
Slope Calculator
Calculate the slope, equation, distance, midpoint, and angle of a line through two points. Includes y-intercept, x-intercept, and perpendicular slope.
Distance Calculator (Points)
Calculate the distance between two points in 2D or 3D space using the distance formula. Also finds midpoint, slope, and angle.
Midpoint Calculator
Find the midpoint between two points in 2D or 3D space. Also find a missing endpoint given one endpoint and the midpoint.
Percent Error Calculator
Calculate percent error between an experimental (measured) value and a theoretical (accepted) value. Used in science, chemistry, and physics labs.
Significant Figures Calculator
Count significant figures in any number, round to a specified number of sig figs, and apply significant figure rules to addition, subtraction, multiplication, and division.
Roofing Calculator
Calculate roofing materials needed for any roof. Enter length, width, and pitch to get squares, shingle bundles, ridge cap, and nail count.
Flooring Calculator
Calculate how much flooring you need for one or multiple rooms. Get total square footage, waste-adjusted area, and number of boxes.
Mulch Calculator
Calculate cubic yards, cubic feet, and bags of mulch or topsoil for rectangular and circular garden beds.
Gravel Calculator
Calculate cubic yards, cubic feet, and tons of gravel, crushed stone, sand, fill dirt, or topsoil for any project.
Fence Calculator
Calculate fence posts, boards, rails, and concrete needed for a wood privacy fence.
Deck Calculator
Calculate deck boards, screws, and joists needed for a wood or composite deck.
Drywall Calculator
Calculate drywall sheets, joint compound, tape, and screws for any room or multiple rooms.
Lumber Calculator
Calculate board feet and linear feet for any lumber order. Add multiple pieces with different dimensions.
Pool Volume Calculator
Calculate swimming pool volume in gallons and liters. Supports rectangular, oval, and round pools with variable depth.
Wallpaper Calculator
Calculate how many rolls of wallpaper you need. Accounts for pattern repeat, roll dimensions, doors, and windows.
Stair Calculator
Calculate stair rise, run, number of steps, stringer length, and angle from total floor-to-floor rise. Checks building code compliance.
Insulation Calculator
Calculate insulation thickness and quantity needed to reach any R-value. Supports fiberglass batts, blown insulation, spray foam, and rigid foam.
Brick Calculator
Calculate bricks and mortar bags needed for any wall. Choose from 5 standard brick sizes.
HVAC BTU Calculator
Calculate BTU heating or cooling capacity needed for any room. Accounts for insulation, climate zone, occupants, and windows.
Solar Panel Calculator
Calculate how many solar panels you need based on monthly electricity usage. Get system size, annual output, CO2 offset, and estimated cost.
Garden Area Calculator
Calculate total garden bed area, soil volume, and plant count for multiple beds in rectangle, circle, or triangle shapes.
Vinyl Siding Calculator
Calculate how many squares of vinyl or wood siding you need. Enter wall areas, exposure, and waste percentage.
Patio Calculator
Calculate patio pavers, setting sand, and base gravel needed for any patio or walkway project.
Gutter Calculator
Calculate gutter linear footage, downspout count, hangers, and elbows needed for any house.
Window Opening Calculator
Calculate rough opening dimensions and header size for windows and doors. Add multiple openings of different sizes.