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Percentage CalculatorWhat percent, percent of, and percent off, all in one place

Three everyday percentage calculations: what percent one number is of another, X percent of a number, and the price after a percentage discount. For test scores, sale prices, tax, raises and growth rates.

Work out a sale price, a test score or a growth rate without doing the division by hand.

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Percentage Calculator: tips and things to know

  • A price with Japan's 10% consumption tax is the base price × 1.1.
  • "3 wari" (3割) off in a Japanese shop means 30% off, so you pay 70%.
  • Year-on-year change is (this year − last year) ÷ last year × 100.

How to use the Percentage Calculator

  1. Choose a mode

    Pick "A is what % of B", "X% of A" or "Discount".

  2. Enter the numbers

    Fill in the two fields.

  3. Read the result

    The answer appears as you type.

Percentage Calculator FAQ

What can it calculate?

Three things: what percent A is of B, what X percent of A is, and the price after a percentage discount.

Can I enter decimals?

Yes. Decimal values work in every field.

Can I use it for consumption tax?

Yes. Use "X% of A" with the tax rate to get the tax, or the consumption tax calculator for tax-included prices directly.