Percentage Calculator
Calculate what percentage one number is of another, apply a percentage increase or decrease, and more.
What is% of
Enter both numbers to see the result.
Free to use, no sign-up, no limit on how many times you run it.More calculators tools
Overview
Percentage math is simple in theory but easy to get backwards under pressure. This calculator covers the three most common percentage questions in one place.
- Find what percent X is of Y
- Calculate a percentage of a given number
- Work out percentage increase or decrease between two values
How to use it
- 1Choose the type of percentage calculation you need
- 2Enter the two relevant numbers
- 3Read the result, shown with the formula used
Tips
- — For discounts, use the percentage-of-a-number option: 20% off $80 means finding 20% of 80, then subtracting it
Frequently asked questions
How do I calculate a percentage increase?
Enter the original value and the new value in the increase/decrease section — the tool shows the percentage change and whether it's an increase or decrease.
Can I find what percentage one number is of another?
Yes, use the 'X is what percent of Y' section — enter both numbers and the percentage is calculated instantly.