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Calculators

Free online calculators for finance, health, math and everyday life. Fast, accurate, no sign-up.

BMI Calculator

Free BMI calculator: enter your height and weight to instantly get your Body Mass Index and see if y…

Age Calculator

Enter your date of birth to get your exact age in years, months and days — plus total days lived and…

Percentage Calculator

Free percentage calculator for all percent problems: find X percent of Y, what percent X is of Y, an…

Tip Calculator

Free tip calculator: enter your bill, pick a tip percentage, and split it between friends. See the t…

Mortgage Calculator

Free mortgage calculator: enter home price, down payment, interest rate, and loan term to see your m…

Loan Calculator

Free loan calculator: enter the loan amount, interest rate, and term to see your monthly payment, to…

Compound Interest Calculator

See how a savings account grows with compound interest. Enter your deposit, interest rate and years …

Calorie Calculator

Free calorie calculator: estimate your BMR with the Mifflin-St Jeor equation and find your total dai…

Volume Calculator

Find the volume of any 3D shape — cube, sphere, cylinder, cone or box — in seconds. Free volume calc…

Area Calculator

Calculate the area of any flat shape instantly — square, rectangle, triangle, circle and more. Free …

Salary Calculator

Free salary calculator: convert pay between hourly, weekly, monthly, and annual figures. Compare job…

Retirement Calculator

Free retirement calculator: project your nest egg from current savings, monthly contributions, and e…

Simple Interest Calculator

Calculate simple interest in seconds with our free simple interest calculator. Enter principal, rate…

Investment Calculator

Grow your money smarter with our free investment calculator. Enter your initial deposit, monthly con…

GPA Calculator

Calculate your GPA instantly with our free GPA calculator. Enter up to 5 courses with grades and cre…

Scientific Calculator

Free online scientific calculator for trig, roots, logs and powers. Type any expression with sin, co…

Math Calculator

Free online math calculator for quick arithmetic. Type any expression with + - x / parentheses, powe…

Fraction Calculator

Free fraction calculator for adding, subtracting, multiplying and dividing fractions. Results auto-s…

Sales Tax Calculator

Calculate sales tax fast with our free sales tax calculator. Enter the price and tax rate to see the…

Paycheck Calculator

Estimate your take-home pay with our free paycheck calculator. Enter gross pay, tax rates and deduct…

Savings Calculator

See how your savings grow month by month. Enter your starting amount, monthly deposits, interest rat…

Auto Loan Calculator

Calculate your car loan EMI in seconds — enter the price, down payment, interest rate and term to se…

Rent vs Buy Calculator

Should you rent or buy? Our free rent vs buy calculator compares total renting costs against buying …

Speed Calculator

Calculate speed instantly with our free speed calculator. Enter distance and time in any units to ge…

Perimeter Calculator

Free perimeter calculator for squares, rectangles, triangles and circles. Enter the side lengths and…

Surface Area Calculator

Free surface area calculator for 3D shapes: cube, sphere, cylinder, cone and box. Enter the dimensio…

Circle Calculator

Free circle calculator: enter the radius to instantly get the diameter, circumference and area of an…

Triangle Calculator

Free triangle calculator: enter the three side lengths to get the perimeter and exact area with Hero…

Ovulation Calculator

Free ovulation calculator: enter the first day of your last period and cycle length to find your fer…

Ratio Calculator

Free ratio calculator: enter any two numbers to simplify the ratio to lowest terms, plus the decimal…

Debt Payoff Calculator

Free debt payoff calculator: enter your balance, APR and monthly payment to see exactly how many mon…

Pay Raise Calculator

Free pay raise calculator: enter your current salary and raise to see your new annual pay, the dolla…

Discount Calculator

Free discount calculator: enter the original price and discount percent to get the sale price and ex…

Amortization Calculator

Free amortization calculator with full payment schedule: enter loan amount, rate and term to see you…

Due Date Calculator

Free due date calculator: enter the first day of your last period to estimate your baby's due date, …

Grade Calculator

Free grade calculator: enter up to three assignment grades with their weights to get your weighted a…

Time Duration Calculator

Free time duration calculator: enter a start and end time to get the exact hours and minutes between…

GCF Calculator

Free GCF calculator: enter two whole numbers to find their greatest common factor instantly using th…

LCM Calculator

Free LCM calculator: enter two whole numbers to get their least common multiple instantly - great fo…

Prime Number Checker

Free prime number checker: enter any whole number to find out instantly whether it is prime - compos…

SaaS LTV & Churn Calculator

Free SaaS calculator: enter ARPA, monthly churn and gross margin to get customer lifetime value, ann…

Cap Rate Calculator

Free cap rate calculator: enter a property's annual net operating income and value to get its capita…

Solar Tax Credit Estimator

Free solar tax credit estimator: enter your US solar installation cost to estimate the federal Inves…

EMI Calculator

Calculate your loan EMI in seconds — enter the loan amount, annual interest rate and tenure to get y…

Standard Deviation Calculator

Find the standard deviation of a dataset in seconds. Enter your numbers to get the mean, population …

Inflation Calculator

See what inflation does to your money. Enter an amount, an annual inflation rate and a number of yea…

Hours Calculator

Add or subtract time durations instantly. Enter hours and minutes like 8:30 and 7:45 to get the tota…

GST / VAT Calculator

Calculate GST or VAT in seconds. Add tax to a net price or strip it out of a gross price at any rate…

House Affordability Calculator

How much house can you afford? Enter income, debts, down payment and rate to get your max monthly pa…

Mortgage Payoff Calculator

See how extra payments crush your mortgage. Enter balance, rate, years left and a monthly extra to r…

Profit Margin Calculator

Margin or markup? Get both instantly. Enter cost and selling price to see profit, profit margin % an…

APR Calculator

The advertised rate is never the true cost of borrowing. Enter loan amount, fees, rate and term to r…