Percentage Calculator

How to use

1. 1Pick a calculator mode at the top: percent of, what percent, percent change, or discount and tip.
2. 2Type the two numbers into the input fields. Decimal points and commas both work.
3. 3Read the answer, supporting figures, and equation in the Result panel.
4. 4Click Copy on any row to copy that value, or use Swap and Clear to reset the inputs.

About this tool

Percentage Calculator answers the four percentage questions people ask most often. Find what X percent of Y is, work out what percent one number is of another, calculate the percentage increase or decrease between two values, and apply a discount or tip to a price. Each mode shows the answer, related figures, and the underlying equation so you can double-check the math. Calculations run entirely in your browser, so nothing you type is sent over the network.

Free to use. Works in your browser. No signup, no login.