Percentage Calculator

Work out percentages in a snap.

FREE TO USENO SIGN-UP REQUIREDBROWSER-BASED

CALCULATION

PERCENTAGE (%)NUMBER

RESULT

Enter two values to see the result.

Percentages are computed in your browser. Results may show many decimals — round them for everyday use.

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How to calculate a percentage

01 / STEPS

01Pick a calculation — Choose from the four modes in the CALCULATION menu.
02Enter two values — Fill in the percentage and number, or the part and whole, depending on the mode.
03Copy the answer — Read the result on the right and click COPY, or [ CLEAR ] to start over.

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02 / DETAILS

›X% of Y — A portion of a total — for tips, discounts and shares of a whole.
›X is what % of Y — Compares two amounts as a percentage, useful for scores and ratios.
›Increase / decrease — Applies a percent change to a starting value, for growth, tax or markdowns.

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03 / FAQ

Which calculation do I pick?

Use “X% of Y” for a slice of a total, “X is what % of Y” to compare two amounts, and increase/decrease to apply a percent change.

Why does the result have many decimals?

Percent math often lands on long decimals. Round the answer for everyday use.

What if I divide by zero?

The “X is what % of Y” mode needs a non-zero whole; entering 0 there gives no result.

Can it handle negative numbers?

Yes. Negative values and percentages are accepted and the arithmetic follows through.

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04 / RELATED