Percentage calculator

Two common questions—answered instantly. Numbers stay in your browser.

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What is X% of Y?

Percent (X)

Of number (Y)

Result

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X is what percent of Y?

Number (X)

Of number (Y)

Result

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How to use. Each card answers a different question—type numbers in the fields and the Result updates as you go. Use ordinary decimals (e.g. 15 for 15%). Nothing is sent anywhere.