Percentage Calculator

Quickly calculate percentages, increases and decreases.

Works instantly, nothing is uploaded

Find X% of Y

Percentage

% of

Number

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X is what percentage of Y

is what % of

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Percentage increase or decrease

From

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Find the original total

Percentage

% of what

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Quick reference

Common percentage calculations

Use "X% of Y" for discounts and tips, "X is what % of Y" to check a proportion, "% Increase / Decrease" to compare two numbers over time (such as prices or scores), and "X is Y% of what?" to work backward to an original total. Nothing you enter here is uploaded or sent anywhere; everything runs directly in your browser.