All Calculators

Calculator

A clean, general-purpose calculator for everyday arithmetic.

Undefined/General134 uses

Amortization Schedule Calculator

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

Personal Finance276 uses

Break-Even Calculator

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

Personal Finance444 uses

Car Loan Calculator

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

Personal Finance288 uses

GST Calculator

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

Personal Finance406 uses

Hourly to Salary Calculator

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

Personal Finance385 uses

Income Tax Calculator

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

Personal Finance357 uses

Lease Calculator

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

Personal Finance197 uses

Loan Calculator

Calculate monthly loan payments, total interest and total repayment.

Personal Finance271 uses

Loan Payoff Calculator

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

Personal Finance406 uses

Margin Calculator

Calculate gross profit margin percentage from cost and selling price.

Personal Finance218 uses

Markup Calculator

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

Personal Finance112 uses

Mortgage Calculator

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

Personal Finance436 uses

Net Salary Calculator

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

Personal Finance441 uses

Refinance Calculator

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

Personal Finance426 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 Finance165 uses

VAT Calculator

Add or remove VAT from a price at any rate.

Personal Finance357 uses

BAC Calculator

Estimate blood alcohol content using the Widmark formula.

Health and Fitness431 uses

BMI Calculator

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

Health and Fitness207 uses

BMR Calculator

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

Health and Fitness287 uses

Body Fat Calculator

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

Health and Fitness156 uses

Body Shape Calculator

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

Health and Fitness134 uses

Bra Size Calculator

Find your bra size from band and bust measurements.

Health and Fitness420 uses

Calorie Calculator

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

Health and Fitness308 uses

Height Calculator

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

Health and Fitness112 uses

Ideal Weight Calculator

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

Health and Fitness176 uses

Macro Calculator

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

Health and Fitness435 uses

One Rep Max Calculator

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

Health and Fitness146 uses

Ovulation Calculator

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

Health and Fitness111 uses

Period Calculator

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

Health and Fitness141 uses

Pregnancy Due Date Calculator

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

Health and Fitness212 uses

Protein Calculator

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

Health and Fitness81 uses

Sleep Calculator

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

Health and Fitness326 uses

TDEE Calculator

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

Health and Fitness400 uses

Age Calculator

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

Date and Time398 uses

Business Days Calculator

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

Date and Time277 uses

Conception Calculator

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

Date and Time191 uses

Date Calculator

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

Date and Time120 uses

Date Difference Calculator

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

Date and Time93 uses

Day Counter

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

Date and Time331 uses

Time Calculator (Add/Subtract)

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

Date and Time380 uses

Time Card Calculator

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

Date and Time396 uses

Time Zone Converter

Convert a time from one UTC offset to another.

Date and Time136 uses

Average Calculator

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

Educational and Academic376 uses

GPA Calculator

Calculate your weighted GPA from grade points and credit hours.

Educational and Academic158 uses

Grade Calculator

Calculate your weighted overall grade from assignment scores and weights.

Educational and Academic270 uses

Long Division Calculator

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

Educational and Academic430 uses

Scientific Calculator

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

Educational and Academic272 uses

Subnet Calculator

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

Educational and Academic227 uses

Area Calculator

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

Mathematical and Scientific392 uses

Binary Calculator

Add, subtract, multiply or divide two binary numbers.

Mathematical and Scientific195 uses

Circle Calculator

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

Mathematical and Scientific381 uses

Distance Formula Calculator

Find the distance between two points on a coordinate plane.

Mathematical and Scientific84 uses

Exponent Calculator

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

Mathematical and Scientific367 uses

Hex Calculator

Add, subtract, multiply or divide two hexadecimal numbers.

Mathematical and Scientific209 uses

Percentage Calculator

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

Mathematical and Scientific122 uses

Percentage Increase Decrease Calculator

Find the percentage increase or decrease between two values.

Mathematical and Scientific427 uses

Perimeter Calculator

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

Mathematical and Scientific122 uses

Quadratic Formula Calculator

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

Mathematical and Scientific134 uses

Ratio Calculator

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

Mathematical and Scientific233 uses

Rounding Calculator

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

Mathematical and Scientific83 uses

Slope Calculator

Find the slope, angle and equation of the line through two points.

Mathematical and Scientific127 uses

Triangle Calculator

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

Mathematical and Scientific142 uses

401k Calculator

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

Interest and Savings262 uses

APR Calculator

Calculate the true annual percentage rate including fees.

Interest and Savings335 uses

CD Calculator

Calculate the maturity value of a certificate of deposit.

Interest and Savings166 uses

Compound Interest Calculator

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

Interest and Savings432 uses

Credit Card Interest Calculator

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

Interest and Savings130 uses

Discount Calculator

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

Interest and Savings381 uses

House Affordability Calculator

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

Interest and Savings225 uses

Inflation Calculator

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

Interest and Savings285 uses

Interest Rate Calculator

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

Interest and Savings412 uses

Mortgage Payoff Calculator

See how extra payments shorten your mortgage and save interest.

Interest and Savings109 uses

Retirement Savings Calculator

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

Interest and Savings275 uses

ROI Calculator

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

Interest and Savings129 uses

Roth IRA Calculator

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

Interest and Savings93 uses

Savings Calculator

Project your savings growth with regular deposits and compound interest.

Interest and Savings256 uses

Simple Interest Calculator

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

Interest and Savings441 uses

Fraction Calculator

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

Measurement and Conversion341 uses

Length Unit Converter

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

Measurement and Conversion345 uses

Percent Error Calculator

Calculate percent error between an experimental and a true value.

Measurement and Conversion90 uses

Speed Converter

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

Measurement and Conversion357 uses

Surface Area Calculator

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

Measurement and Conversion231 uses

Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin.

Measurement and Conversion349 uses

Volume Calculator

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

Measurement and Conversion338 uses

Weight Unit Converter

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

Measurement and Conversion182 uses

Dice Roller

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

Randomness and Miscellaneous120 uses

Love Calculator

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

Randomness and Miscellaneous222 uses

Number to Roman Numeral Converter

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

Randomness and Miscellaneous419 uses

Random Number Generator

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

Randomness and Miscellaneous370 uses

BTU Calculator

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

Home and Renovation105 uses

Concrete Calculator

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

Home and Renovation113 uses

Gravel Calculator

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

Home and Renovation297 uses

kWh Calculator

Estimate the electricity cost of running an appliance.

Home and Renovation255 uses

Paint Calculator

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

Home and Renovation341 uses

Roofing Calculator

Estimate roofing squares and shingle bundles needed from roof dimensions.

Home and Renovation332 uses

Square Footage Calculator

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

Home and Renovation401 uses

Fuel Cost Calculator

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

Travel and Distance301 uses

Fuel Economy Calculator

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

Travel and Distance83 uses

Mileage Calculator

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

Travel and Distance167 uses

Pace Calculator

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

Travel and Distance248 uses

Tire Size Calculator

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

Travel and Distance251 uses

Mean Calculator

Quickly calculate the arithmetic mean of a list of numbers.

Statistical341 uses

Standard Deviation Calculator

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

Statistical282 uses

Z-Score Calculator

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

Statistical446 uses

Currency Converter (Manual Rate)

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

Currency Conversion197 uses

Currency to Converter

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

Currency Conversion223 uses