How to use the Percentage Calculator
- Enter your values
- Results update instantly
- Review the detailed breakdown
About the Percentage Calculator
Four calculators in one: X% of Y, X as a percentage of Y, percentage change between two values, and increasing or decreasing a value by a percentage.
Instant resultsEverything updates live as you type. No buttons to wait on.
PrivateYour input never leaves your browser and is never stored.
Free foreverNo signup, no limits and no paywall.
Works offlineInstall the site as an app and use it anywhere.
Percentage Calculator FAQ
Is the Percentage Calculator free?
Yes, it is 100% free with no signup, no watermarks and no usage limits.
Is my data private?
Yes. Everything is calculated in your browser. Nothing you type is sent to or stored on a server.
Does it work on phones and tablets?
Yes. The tool works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.