Percentage Calculator
Solve common percentage questions with one compact calculator: a percentage of a value, one value as a percentage of another, or the change between values.
Runs locally in your browser
Result
30
What is the Percentage Calculator?
Solve common percentage questions with one compact calculator: a percentage of a value, one value as a percentage of another, or the change between values.
How to use it
- 1Choose the question you want to answer.
- 2Enter A and B with the labels shown.
- 3Read the updated numeric result.
How it works
A% of B is A × B ÷ 100. A as a percent of B is A ÷ B × 100. Change from A to B is (B − A) ÷ A × 100.
A discount amount
15% of 200 is 30. If a value rises from 200 to 230, the percentage change is +15%.
Limitations & notes
- A zero divisor has no defined percentage result.
- Results are rounded for display to six decimal places.
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