Free Online Tool
Percentage Calculator
Use common percentage calculations for discounts, growth rates, and proportions.
The result will appear here.
How to Use
- Choose a calculation mode.
- Enter values A and B.
- Run the calculation.
Examples
- 15% of 50,000 is 7,500
- 80 to 100 is a 25% increase
Calculation and Conversion Notes
B% of A is calculated as `A × B / 100`. A as a percentage of B is calculated as `A / B × 100`. Increase or decrease rate is calculated as `(new value - old value) / old value × 100`.
FAQ
Does Percentage Calculator save my input?
No. Your input is not stored on a server. Supported actions run in your browser.
Can I use it on mobile?
Yes. The pages are responsive and work on desktop and mobile browsers.
Can I rely on the result?
Use the result as a quick reference. Important work should be checked separately.