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Percentage Calculator

Calculate percentages: what is X% of Y, X is what % of Y, and percentage change.

Works offlineNothing uploaded

What is% of?

is what % of?

Change fromto

How to Use

Choose calculation type

Select the percentage operation you need.

Enter your values

Input the numbers for your calculation.

View the result

See the calculated percentage instantly.

What calculations can I do?

Three types: what is X% of Y, X is what percent of Y, and the percentage change between two numbers.

How is percentage change calculated?

Percentage change = ((new - old) / |old|) x 100. A positive result means an increase, negative means a decrease.

Is this percentage calculator private? Can I use it offline?

Yes on both counts. Math runs on your computer with JavaScript — your numbers stay on your device, and the tool works offline.

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