Percentage calculator
Work out percentages: what is X% of a number, and what percent one value is of another. Free, private, no sign-up.
About the Percentage calculator
Percentages appear everywhere: discounts in a shop, marks in an exam, interest on a loan, tax on a bill and growth in a business report. Yet doing the arithmetic in your head is not always easy. This free percentage calculator gives you quick, reliable answers to the two questions people ask most often.
The first calculator finds a percentage of a number, such as 15 percent of 200. The second tells you what percent one value is of another, for example how much 50 is out of 200. Type your numbers and the results update immediately, with no button to press. You can use it to work out sale prices, calculate tips, check your exam score, compare prices or measure change in sales and expenses. The calculation takes place in your browser, so nothing is stored or shared. It is free, simple and works on any phone, tablet or computer, so keep it bookmarked for the next time you shop or study.
How to use
Use the first box to find a percentage of a number, for example 15% of 200. Use the second box to find what percent one value is of another, for example 50 out of 200.
Frequently asked questions
- How do I find a percentage of a number?
- Multiply the number by the percentage and divide by 100.
- How do I find what percent one number is of another?
- Divide the part by the whole and multiply by 100.
- Can I use it for discounts?
- Yes. Find the percentage of the price to get the discount amount, then subtract it from the price.
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