Percentage Calculator
Calculate what X% of a number is, what percent one number is of another, or the percent change between two numbers. Free and private, right in your browser.
What is X% of Y?
X is what percent of Y?
Percent change from X to Y
Work out percentages without doing the arithmetic by hand. What X% of Y is, what percentage one number is of another, or how much a value changed in percent. Handy for tips, discounts, grades, raises, or splitting a bill.
How to use it
- Pick the calculation you need (percent of a number, percent change, or find the percentage)
- Enter your numbers
- Read the result instantly, updated as you type
Frequently asked questions
- How do I find what percentage one number is of another?
- Enter the part and the whole, for example, 45 out of 60, and the tool divides and multiplies by 100 to give you 75%.
- How do I calculate a percentage increase or decrease, like a discount or raise?
- Enter the original value and the new value; the tool subtracts, divides by the original, and shows the change as a percentage (with a minus sign for a decrease).
- Can it calculate a tip or a price after a discount?
- Yes. Use the "X% of Y" calculation to get 20% of a $58 bill for a tip, or subtract the result from the price to see the discounted total.
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Nothing is uploaded
The file never leaves your device. There is no server to send it to, so there is nothing to leak, log, or subpoena.
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No signup, no limits
No account, no email, no daily cap, no watermark, and no paid tier waiting behind the third file.
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Works offline
Load the page once and it keeps working with the network off, because all the work was always happening locally.