Home / Tools / Percentage Calculator
Percentage Calculator
Three common percentage sums in one place: X% of a number, X is what % of Y, and percent change.
How to use
- Pick what you want to find.
- Type the two numbers.
- Read the answer.
For marks, use "X is what % of Y". For example, 432 out of 500 is 86.4%.
Questions and answers
How do I find a percentage of a number?
Choose "X% of a number", type the percent and the number.
How do I work out percent marks?
Choose "X is what % of Y". X is your marks and Y is the total.
How is percent increase calculated?
(New − Old) ÷ Old × 100.
Is this tool free?
Yes. It is free, needs no sign-up and has no daily limit.