Percentage Calculator

Calculate percentages easily: what is X% of Y, X is what percent of Y, and percentage increase or decrease.

Processed on your device Works offline Free, no sign-up

How to use Percentage Calculator

How is percentage change calculated?

(new − old) ÷ old × 100.

Is Percentage Calculator free?

Yes. Percentage Calculator is completely free, with no sign-up, no watermark and no usage limits.

Is my data uploaded to a server?

No. Percentage Calculator runs entirely in your browser. Your files and text never leave your device.

Does it work offline?

Yes. After Red Cat Tools has loaded once, this tool keeps working without an internet connection. You can also install Red Cat Tools as an app.

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