Percentage Calculator
Calculate percentages online — find X% of a number, what percent X is of Y, percentage change, and reverse percentage lookups.
Quick Examples
- • 20% of 150 = 30
- • 45 is 60% of 75
- • 100 → 120 = +20% increase
- • 30 is 25% of 120
About Percentage Calculator
Solve any percentage problem instantly. Find what percentage one number is of another, calculate a percentage of a value, work out percentage increase or decrease, or reverse-calculate what number a percentage belongs to. completely free.
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Your privacy is built in
Everything in Percentage Calculator runs locally in your browser — your data never leaves your device and is never uploaded to a server, so nothing you enter is stored or seen by anyone else. No account, no sign-up, no watermark, and completely free.
Frequently asked questions
What types of percentage calculations can I do?
You can calculate: what is X% of Y, what percentage X is of Y, percentage increase/decrease from X to Y, and what number X is N% of.
How do I calculate a percentage increase?
Select "% change from X to Y", enter the original value as X and the new value as Y. The result shows the percentage increase or decrease.