About Percentage Calculator

Percentage Calculator is a free online tool that works out any percentage in seconds — what is X% of a number, what percent one number is of another, a percentage increase or decrease, the percentage change between two numbers, a reverse percentage, and the difference between a percent and a percentage point. It was made by Anees Ur Rehman for everyone who needs a quick, exact answer without a spreadsheet or a paid app.

Everything runs in your browser. When you type numbers into a calculator, the answer is worked out on your own device — the numbers are never sent to any server, stored anywhere or seen by anyone. Every calculator shows its formula as well as the result, so you can check the answer by hand and learn how it was worked out. The worked examples use real numbers you can verify: 20% of 150 is 30, 45 is 30% of 150, and 150 rising to 180 is a 20% increase.

Percentage Calculator is free forever. There is no account, no sign-up, no install and no limit. The site is supported by advertising (Google AdSense) — the ads keep the tool free, and you can choose personalised or non-personalised ads with the cookie banner at the bottom of the page.

Who made Percentage Calculator?

Percentage Calculator is made by Anees Ur Rehman, who also runs ToolKamai (free online tools), AI Creator Studio (free AI tools), TempMail, TempNumber and PDF Tools. If a calculator does not work as it should, or you want another calculator added, please contact us — every message is read.