All Calculators

Calculator

A clean, general-purpose calculator for everyday arithmetic.

Undefined/General277 uses

Amortization Schedule Calculator

Generate a full month-by-month loan amortization schedule.

Personal Finance100 uses

Break-Even Calculator

Find how many units you need to sell to cover your fixed costs.

Personal Finance84 uses

Car Loan Calculator

Calculate your monthly car payment from price, down payment, trade-in, rate and term.

Personal Finance324 uses

GST Calculator

Add or remove GST from a price at any rate — for India, Australia, Canada, NZ.

Personal Finance165 uses

Hourly to Salary Calculator

Convert hourly wage to weekly, monthly and yearly income — or reverse.

Personal Finance260 uses

Income Tax Calculator

Estimate US federal income tax owed using simplified 2024 tax brackets.

Personal Finance268 uses

Lease Calculator

Estimate monthly car lease payments from price, residual value and money factor.

Personal Finance253 uses

Loan Calculator

Calculate monthly loan payments, total interest and total repayment.

Personal Finance299 uses

Loan Payoff Calculator

See how much faster you pay off a loan with extra monthly payments.

Personal Finance377 uses

Margin Calculator

Calculate gross profit margin percentage from cost and selling price.

Personal Finance340 uses

Markup Calculator

Calculate the selling price and profit from cost and desired markup percentage.

Personal Finance307 uses

Mortgage Calculator

Estimate your monthly mortgage payment from home price, down payment, rate and term.

Personal Finance309 uses

Net Salary Calculator

Estimate take-home pay from gross salary and a flat deduction rate.

Personal Finance184 uses

Refinance Calculator

Compare your current mortgage payment to a new refinanced rate and term.

Personal Finance184 uses

Sales Tax Calculator

Add sales tax to a price and see the tax amount and total.

Personal Finance375 uses

Tip Calculator

Calculate the tip, total bill and per-person split in one step.

Personal Finance436 uses

VAT Calculator

Add or remove VAT from a price at any rate.

Personal Finance178 uses

BAC Calculator

Estimate blood alcohol content using the Widmark formula.

Health and Fitness323 uses

BMI Calculator

Calculate your Body Mass Index from height and weight, in metric or imperial.

Health and Fitness153 uses

BMR Calculator

Estimate your Basal Metabolic Rate and daily calorie needs by activity level.

Health and Fitness98 uses

Body Fat Calculator

Estimate body fat percentage using the U.S. Navy tape-measure method.

Health and Fitness405 uses

Body Shape Calculator

Estimate your body shape category from bust, waist and hip measurements.

Health and Fitness407 uses

Bra Size Calculator

Find your bra size from band and bust measurements.

Health and Fitness255 uses

Calorie Calculator

Find your daily calorie target for weight loss, maintenance or muscle gain.

Health and Fitness157 uses

Height Calculator

Estimate a child's adult height from both parents' heights.

Health and Fitness271 uses

Ideal Weight Calculator

Estimate a healthy weight range from your height using common formulas.

Health and Fitness367 uses

Macro Calculator

Calculate daily protein, carb and fat targets from your calorie goal.

Health and Fitness242 uses

One Rep Max Calculator

Estimate your one-rep max from a weight and rep count using the Epley formula.

Health and Fitness254 uses

Ovulation Calculator

Estimate your next ovulation date and fertile window from your cycle.

Health and Fitness414 uses

Period Calculator

Predict your next period date from your last period and average cycle length.

Health and Fitness439 uses

Pregnancy Due Date Calculator

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

Health and Fitness320 uses

Protein Calculator

Calculate your daily protein needs from body weight and activity goal.

Health and Fitness110 uses

Sleep Calculator

Find the best bedtime or wake time based on 90-minute sleep cycles.

Health and Fitness201 uses

TDEE Calculator

Calculate your Total Daily Energy Expenditure — maintenance calories by activity level.

Health and Fitness394 uses

Age Calculator

Find your exact age in years, months and days from your birth date.

Date and Time250 uses

Business Days Calculator

Count weekdays (excluding weekends) between two dates, or add business days to a date.

Date and Time174 uses

Conception Calculator

Estimate the likely conception date from your due date or last period.

Date and Time205 uses

Date Calculator

Add or subtract days, weeks, months or years from a date.

Date and Time367 uses

Date Difference Calculator

Find the number of years, months, weeks and days between two dates.

Date and Time371 uses

Day Counter

Count the days until (or since) any date, including a live countdown.

Date and Time312 uses

Time Calculator (Add/Subtract)

Add or subtract two durations in hours, minutes and seconds.

Date and Time237 uses

Time Card Calculator

Add up daily clock-in/out times into total hours worked for the week.

Date and Time361 uses

Time Zone Converter

Convert a time from one UTC offset to another.

Date and Time216 uses

Average Calculator

Find the mean, median, mode and range of a set of numbers.

Educational and Academic377 uses

GPA Calculator

Calculate your weighted GPA from grade points and credit hours.

Educational and Academic351 uses

Grade Calculator

Calculate your weighted overall grade from assignment scores and weights.

Educational and Academic257 uses

Long Division Calculator

Divide two numbers and see the quotient and remainder step by step.

Educational and Academic117 uses

Scientific Calculator

A scientific calculator with trig, powers, roots and logarithms.

Educational and Academic390 uses

Subnet Calculator

Calculate network address, broadcast address and host range from an IP and CIDR.

Educational and Academic203 uses

Area Calculator

Calculate the area of a rectangle, circle, triangle or trapezoid.

Mathematical and Scientific285 uses

Binary Calculator

Add, subtract, multiply or divide two binary numbers.

Mathematical and Scientific251 uses

Circle Calculator

Calculate a circle's area, circumference and diameter from its radius.

Mathematical and Scientific445 uses

Distance Formula Calculator

Find the distance between two points on a coordinate plane.

Mathematical and Scientific325 uses

Exponent Calculator

Calculate a base raised to any power, including negative and fractional exponents.

Mathematical and Scientific148 uses

Hex Calculator

Add, subtract, multiply or divide two hexadecimal numbers.

Mathematical and Scientific289 uses

Percentage Calculator

Three-in-one percentage calculator: find X% of Y, what % X is of Y, or percent change.

Mathematical and Scientific212 uses

Percentage Increase Decrease Calculator

Find the percentage increase or decrease between two values.

Mathematical and Scientific190 uses

Perimeter Calculator

Calculate the perimeter of a rectangle, square, circle or triangle.

Mathematical and Scientific151 uses

Quadratic Formula Calculator

Solve ax² + bx + c = 0 for real or complex roots.

Mathematical and Scientific85 uses

Ratio Calculator

Simplify a ratio to lowest terms, or solve for a missing value.

Mathematical and Scientific372 uses

Rounding Calculator

Round a number to any number of decimal places or significant figures.

Mathematical and Scientific165 uses

Slope Calculator

Find the slope, angle and full equation of the line through two points, with every algebra step shown.

Mathematical and Scientific162 uses

Triangle Calculator

Find the hypotenuse of a right triangle, or its area from base and height.

Mathematical and Scientific153 uses

401k Calculator

Project your 401(k) balance at retirement from contributions, match and growth.

Interest and Savings319 uses

APR Calculator

Calculate the true annual percentage rate including fees.

Interest and Savings137 uses

CD Calculator

Calculate the maturity value of a certificate of deposit.

Interest and Savings202 uses

Compound Interest Calculator

See how your savings or investment grows with compound interest over time.

Interest and Savings385 uses

Credit Card Interest Calculator

See how long it takes to pay off a credit card balance and total interest paid.

Interest and Savings430 uses

Discount Calculator

Find the sale price and savings from an original price and discount percentage.

Interest and Savings175 uses

House Affordability Calculator

Estimate how much house you can afford based on income and debts.

Interest and Savings230 uses

Inflation Calculator

See what an amount of money is worth today after years of inflation.

Interest and Savings203 uses

Interest Rate Calculator

Solve for the interest rate given principal, final amount and time.

Interest and Savings266 uses

Mortgage Payoff Calculator

See how extra payments shorten your mortgage and save interest.

Interest and Savings237 uses

Retirement Savings Calculator

Project your retirement savings from current balance, monthly contributions and expected return.

Interest and Savings174 uses

ROI Calculator

Calculate return on investment and annualized return from initial and final value.

Interest and Savings272 uses

Roth IRA Calculator

Project your Roth IRA balance at retirement from annual contributions and growth.

Interest and Savings383 uses

Savings Calculator

Project your savings growth with regular deposits and compound interest.

Interest and Savings136 uses

Simple Interest Calculator

Calculate simple interest and total repayment for a fixed principal and rate.

Interest and Savings206 uses

Fraction Calculator

Add, subtract, multiply or divide two fractions with simplified results.

Measurement and Conversion184 uses

Length Unit Converter

Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards and miles.

Measurement and Conversion393 uses

Percent Error Calculator

Calculate percent error between an experimental and a true value.

Measurement and Conversion141 uses

Speed Converter

Convert between mph, km/h, m/s and knots.

Measurement and Conversion137 uses

Surface Area Calculator

Calculate the surface area of a cube, box, sphere, cylinder or cone.

Measurement and Conversion148 uses

Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin.

Measurement and Conversion324 uses

Volume Calculator

Calculate the volume of a box, cube, cylinder, sphere or cone.

Measurement and Conversion162 uses

Weight Unit Converter

Convert between milligrams, grams, kilograms, ounces, pounds and metric tons.

Measurement and Conversion228 uses

Dice Roller

Roll any number of virtual dice with any number of sides.

Randomness and Miscellaneous284 uses

Love Calculator

A fun, just-for-entertainment compatibility percentage between two names.

Randomness and Miscellaneous336 uses

Number to Roman Numeral Converter

Convert numbers to Roman numerals, or Roman numerals back to numbers.

Randomness and Miscellaneous108 uses

Random Number Generator

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

Randomness and Miscellaneous290 uses

BTU Calculator

Estimate the BTU heating/cooling capacity needed for a room.

Home and Renovation193 uses

Concrete Calculator

Estimate cubic yards of concrete needed for a slab, and how many bags.

Home and Renovation95 uses

Gravel Calculator

Estimate how many tons of gravel you need for an area.

Home and Renovation305 uses

kWh Calculator

Estimate the electricity cost of running an appliance.

Home and Renovation223 uses

Paint Calculator

Estimate how many gallons of paint you need from wall area and coats.

Home and Renovation368 uses

Roofing Calculator

Estimate roofing squares and shingle bundles needed from roof dimensions.

Home and Renovation136 uses

Slope Grade & Ratio Calculator

Turn rise and run into slope ratio, percentage grade, and angle — for algebra homework, ramps, roofs, roads, and drainage. Free, instant, works on your phone.

Home and Renovation129 uses

Square Footage Calculator

Calculate total square footage from room dimensions — add multiple rooms.

Home and Renovation323 uses

Fuel Cost Calculator

Estimate the fuel cost of a trip from distance, fuel economy and fuel price.

Travel and Distance339 uses

Fuel Economy Calculator

Calculate MPG or L/100km from distance travelled and fuel used.

Travel and Distance126 uses

Mileage Calculator

Calculate a mileage reimbursement amount from distance and a rate per mile.

Travel and Distance427 uses

Pace Calculator

Calculate your running pace, time or distance — enter any two, get the third.

Travel and Distance406 uses

Tire Size Calculator

Compare two tire sizes and see the difference in diameter and speedometer effect.

Travel and Distance156 uses

Mean Calculator

Quickly calculate the arithmetic mean of a list of numbers.

Statistical399 uses

Standard Deviation Calculator

Calculate mean, variance and standard deviation from a list of numbers.

Statistical328 uses

Z-Score Calculator

Calculate a Z-score and its percentile from a value, mean and standard deviation.

Statistical330 uses

Currency Converter (Manual Rate)

Convert between currencies using a rate you enter — handy when you know today's rate.

Currency Conversion376 uses

Currency to Converter

Convert an amount from one currency to another using a rate you enter.

Currency Conversion179 uses