Calculators
Percentage Calculator
Work out percentages and ratios quickly.
Free foreverRuns in your browserNo sign-up
What is X% of Y?
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X is what percent of Y?
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About the Percentage Calculator
Answer the most common percentage questions instantly: what X% of Y is, and what percent X is of Y.
Handy for discounts, tips, tax, grades and everyday quick math.
Both answers update live as you type, so you can compare figures quickly without opening a calculator app.
Key features
- Two calculators in one place
- Live results as you type
- Clear, accurate answers
- Free and completely private
How to use
- 1Enter the two numbers.
- 2Results calculate automatically as you type.
Frequently asked questions
- How do I find what X% of Y is?
- Multiply Y by X and divide by 100. For example, 20% of 150 is 150 x 20 / 100 = 30. The tool does this instantly.
- How do I find what percent one number is of another?
- Divide the first number by the second and multiply by 100. For example, 30 out of 150 is 30 / 150 x 100 = 20%.
- Can it handle decimals?
- Yes. You can enter decimal values and the results are shown with sensible precision.