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CalculatorsCalculators / browser workspace
Percentage Calculator
Find percentages, discounts, increases, and “what percent of” in seconds.
Browser workspace
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A quick start
How to use it
- Pick a calculation mode (percent of, change, or reverse).
- Enter your numbers.
- Get the answer instantly.
- Copy the result if needed.
Common questions
How do I calculate a discount?
Use “X% of Y” with the discount percent and original price, then subtract from the original — or use percentage decrease mode.
What is percentage change?
Percentage change = ((new − old) / old) × 100. Positive means increase; negative means decrease.
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