Answer everyday “percent of” questions: what is X% of Y, and what percent one number is of another. For raising a number by a percent, use the percentage increase calculator.
Percentage calculator
What is X% of Y, and X is what percent of Y. To raise a number by a percent, use the percentage increase calculator.
What is A% of B?
Result: 30
X is what % of Y?
Result: 25%
How to use Percentage calculator
- Choose the calculation type you need (percent of, or what percent).
- Enter the numbers asked for in the form.
- Read the result and copy if needed.
Example: 15% of 80 is 12; 25 is 50% of 50.
Frequently asked questions
- Does this percentage calculator increase a number by a percent?
- No. This page answers “what is X% of Y” and “X is what % of Y.” To increase a starting value by a percentage (raises, rent, prices), use the Percentage increase calculator.
- What is the difference between percent of and percent change?
- Percent of finds a portion of a number, while percent change measures how much a value grew or shrank relative to its starting point. Use Percentage change for old→new, or Percentage increase to apply a % raise.