How it works
- 1Choose the percentage calculation you need.
- 2Enter the two values shown for that calculation.
- 3Calculate and copy the formatted result.
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BROWSER · Local JavaScript percentage formulas
Percentage Calculator
Calculate percentages, percentage increase/decrease, change and difference. Solve what X% of Y is or what percent one number is of another.
✓ Five common percentage calculations in one tool✓ Percentage increase, decrease, change and difference✓ Natural number inputs with instant formatted results
Result90
About this tool
A free browser percentage calculator covering the most common percent formulas in one page.
Frequently asked questions
What calculations are included?
The tool calculates X% of Y, X as a percent of Y, percentage change, percentage difference, and increasing or decreasing a value by a percent.
Is percentage change the same as percentage difference?
No. Percentage change uses the original value as the reference; percentage difference uses the average magnitude of two values.
Is data sent to a server?
No. All calculations run locally in your browser.