X is what % of Y
Find what percentage X represents of a total Y.
is what % of
Result
0.00%
About the What Percent Calculator
The What Percent Calculator answers "X is what percent of Y" — used for exam scores, goal progress, market share, and proportions. For example, 45 correct answers out of 60 questions is 75% — your score on the test.
Results update instantly as you type, with precise math underneath and sensible rounding on screen. Everything runs locally in your browser.
How to use it
- Enter your value in the input field.
- Select the units or values involved.
- Read the result — it updates as you type.
- Adjust any input to recalculate instantly.
Frequently asked questions
How is "X is what % of Y" calculated?
Divide X by Y and multiply by 100: 45 of 60 = 45 ÷ 60 × 100 = 75%.
Does it work with decimals?
Yes — enter any real number; the calculation is precise and only the display is rounded.
Is anything sent to a server?
No. All calculations run locally in your browser.
Is it free to use?
Yes, completely free, with no limits and no account required.