Percentage Calculator
Calculate what is X% of Y, what percentage X is of Y, add a percentage to an amount, or subtract a percentage. Instant results as you type.
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Frequently Asked Questions
- What can I calculate with the percentage calculator?
- Calculate what is X% of Y, what percentage X is of Y, add a percentage to a number, or subtract a percentage. Results update as you type. Free and runs in your browser.
- Is the percentage calculator free?
- Yes. No signup or server — all calculations happen in your browser. Use it for discounts, tips, tax, or any percentage math.
- Can I add or subtract a percentage?
- Yes. Choose the mode: what is X% of Y, what % is X of Y, add %, or subtract %. Useful for prices, tips, and growth rates.