How do I find 20% of a number?
Choose “What is X% of Y?”, enter 20 as X, and enter the number as Y. For example, 20% of 150 is 30.
Percentage Calculator — No Signup Needed
Get clear answers to everyday percentage questions. It works directly in this browser, with no account and nothing to install.
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How to use this percentage calculator
- Choose the type of percentage question from the first menu.
- Enter the two numbers in the labeled boxes.
- Select “Calculate” to see the answer immediately.
Common questions
How do I find what percentage one number is of another?
Choose “X is what percent of Y?”, enter the smaller or first amount as X, and the total as Y.
How is percentage change calculated?
The calculator subtracts the starting number from the new number, divides by the starting number, and multiplies by 100.