Percentage Calculator
X% of a number, percent change, and “what percent is X of Y”.
What is P% of N?
What percent is A of B?
Change from A to B?
How to use the Percentage tool
- Enter your percentage in the fields above.
- Adjust any slider or type an exact number — the answer updates as you go.
- Copy the result and close the tab. Nothing you entered was sent anywhere.
About the Percentage tool
Three common percentage questions in one place: what is P% of N, what percent is A of B, and what is the percentage increase or decrease between two numbers.
Percentage change uses the original value as the base — a rise from 100 to 150 is +50%, and falling back to 100 afterwards is −33.3%, not −50%.
Everything runs locally in your browser: no data is uploaded, no account is needed, and it works offline once the page has loaded.
Embed this tool
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