％Percentage Calculator
What is X% of Y, % change, and more.
About the Percentage Calculator
A simple percentage calculator: find what percentage one number is of another, calculate X% of a value, and work out percentage increase or decrease. Free and instant.
How to use the Percentage Calculator
- 1Enter your numbers into the Percentage Calculator fields above.
- 2Adjust the rate, period, units or other options to match your situation.
- 3Your result is calculated instantly as you type — there's no submit button.
- 4Nothing is stored or uploaded; every calculation runs privately in your browser.
Why use this tool?
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Private by design
The Percentage Calculator runs entirely in your browser — nothing you enter is uploaded to a server.
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Free, no signup
Use it as much as you like. There's no account, no paywall and no watermark.
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Fast & instant
Results appear the moment you type or click — no waiting, no page reloads.
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Works anywhere
Any device or browser, even offline once the page has loaded.
Frequently asked questions
What can this calculator do?＋
It finds X% of a number, what percentage one number is of another, and percentage increase or decrease.