Everyday math,
made simpler.

Calculate discounts, split a bill, convert units, and plan dates with eight free tools.

Calculators

Find a percentage of an amount or calculate the percentage change between two numbers.

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

Count calendar days between two dates, with an option to include both endpoints.

Find the sale price, savings and estimated total after tax.

Calculate a tip and divide the total bill across your group.

Convert Celsius, Fahrenheit and Kelvin with a choice of decimal places.

Combine days, hours and minutes and get the total in minutes and decimal hours.

Convert between bytes and decimal or binary storage units.