Percentage Calculator
Calculate percentages instantly — discounts, tax, increases, marks, profit, commission and more. 12 modes, all in your browser.
What is X% of Y?
Multiply the value by the percentage divided by 100.
All calculations are performed locally in your browser.
Recent calculations
Nothing saved yet. Hit Save to keep a local copy of a calculation — stored only in your browser.
Formulas used
- Percent of value:
Result = (X ÷ 100) × Y - Value as percent:
Percent = (X ÷ Y) × 100 - Percentage change:
((New − Old) ÷ Old) × 100 - Increase / decrease by %:
Value × (1 ± % ÷ 100) - Profit / Margin:
Profit ÷ Cost × 100andProfit ÷ Selling × 100
Common use cases
Privacy
Every calculation runs locally in your browser. No inputs are sent to a server, and there is no tracking of the values you type. The optional history is stored only in your browser's local storage.
How to use Percentage Calculator
- 1
Pick a calculation mode from the tabs — discount, tax, marks, increase, and more.
- 2
Enter your values. Results update instantly as you type.
- 3
Review the primary result, extras and the formula used.
- 4
Copy, share, print or save the calculation to your local history.
Frequently asked questions
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