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Percentage Calculator
Calculate percentages with 5 different calculation modes — basic, change, of what, add, and subtract percentage.
What is X% of Y?
Result
—
Simple controlsEverything you need for the task.
Clear resultsReview your output before using it.
No signupGet started without an account.
How it works
1. Pick a Mode
Choose from 5 different calculation modes.
2. Enter Values
Fill in the numbers — results update live.
3. See Result
Get the exact percentage answer instantly.
4. Copy Result
One-click copy your result to clipboard.
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CalculateFrequently Asked Questions
Basic % of a number, % change, X is what % of Y, add %, and subtract %.
Yes — results update live as you type.
Yes, every result has a one-click copy button.
Yes. The calculator can be used without creating a visitor account.
About Percentage Calculator
Five modes cover common percentage questions: a percentage of a value, percentage change, reverse percentage, and adding or subtracting a percentage. The labels beside each field show which number belongs in each part of the formula.
What to prepare
The numbers, dates, units, or assumptions requested in the calculator.
What the result represents
A calculated result based only on the values and options you provide.
A practical example
It can help when you need to compare a real-world scenario with a second set of values before making a plan. Start with a representative input, inspect the first result, then adjust one setting at a time if you need a different outcome.
- Checking everyday figures with Percentage Calculator.
- Comparing two possible scenarios with Percentage Calculator.
- Recalculating after one value changes with Percentage Calculator.
Before you use the result
- Keep all inputs in the same unit.
- For percentage change, the starting value is the reference value.
- Round only the final result when accuracy matters.
Privacy and processing
Enter only the information required for the result. Browser-based work stays on the device where supported, while public checks use protected, rate-limited site endpoints.