Percentage Calculator

Percent of a number, percentage change, discounts and profit/loss — with formulas shown.

• Runs locally in your browser — no upload, no account

How to use Percentage Calculator

1. Enter your values.
2. The result updates instantly, with the formula shown.
3. Copy the result if you need it.

Frequently asked questions

Is Percentage Calculator free?

Yes. Percentage Calculator is free to use and needs no account or sign-up.

Is my data sent anywhere?

No. Everything you enter is processed inside your browser and is not sent to a server.

Does it work offline?

Once the page has loaded, processing needs no internet connection.

Does it work on phones?

Yes. It works in current mobile browsers on Android and iPhone, as well as on desktop.

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