Percentage Calculator
Calculate a percentage of any value. Enter a percentage and a number to see the result.
About the Percentage Calculator
This calculator answers the everyday question "what is X percent of Y". It multiplies your number by the percentage divided by 100, so 15 percent of 240 returns 36. It is handy for working out tips, exam scores, commission, sale prices, interest portions and any figure expressed as a part of a whole.
How to use it
- Enter the percentage you want, for example
15for fifteen percent. - Enter the number the percentage applies to.
- Read off the result, which updates as you type.
A common use case is checking a quoted discount or a tax slice before you commit to a purchase. Remember that a percentage is always relative to its base, so 20 percent of 50 (which is 10) is not the same as 20 percent of 80. Everything runs entirely in your browser, so the numbers you enter never leave your device and nothing is uploaded.
Frequently asked questions
How do I calculate what percent of a number something is?
Multiply the number by the percentage and divide by 100. For example, 15 percent of 240 is 240 x 15 / 100, which equals 36. This tool does that calculation for you instantly.
What is the difference between percent of and percentage change?
Percent of finds a slice of a single value, such as 20 percent of 50 equals 10. Percentage change compares two values to show how much one grew or shrank relative to the other. This calculator handles the percent of case.
Can I enter decimal percentages?
Yes. You can type values like 7.5 or 12.25 percent and the calculator applies them exactly, which is useful for interest rates and tax fractions.
Are my numbers sent to a server?
No. The calculation happens entirely in your browser, so the figures you enter stay on your device and are never uploaded or stored.