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TOOLDENCALCULATORSON-DEVICE

Percentage Calculator

Work out percentages three ways: X% of Y, what percentage X is of Y, or the percentage change between two values. Results update instantly in your browser.

Formula: (value × percent) / 100. For 20% of 500, that is (500 × 20) / 100 = 100.
20% of 500100

20% of 500 is 100.

Pick a mode on the left, enter the two values, result updates live on the right. All math runs in your browser.

HOW TO USE

  1. 1Pick a mode on the left: X% of Y, X is what % of Y, or % change.
  2. 2Enter the two values on the left.
  3. 3The result updates live on the right as you type.
  4. 4A plain-English summary on the right explains what the number means.

EXAMPLE

INPUT

20% of 500

OUTPUT

100, 20% of 500 is 100

FAQ

How is percentage change calculated?
Change = (new − original) / original × 100. A positive result is an increase, a negative one a decrease.
Is my data sent anywhere?
No. All math runs in your browser.
Can I calculate percentage change?
Yes, enter the old and new values to see the percentage increase or decrease between them.
Does it show the formula?
The calculation steps are shown so you can verify the method, not just the result.

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