Percentage calculator
Calculate percentages in three modes: a percentage of a value, the ratio between two values, and percentage change. Runs locally.
Result
50
// About this tool
Handle everyday percentage math without manual formulas. Switch between percent-of, ratio, and change calculations and copy the result. Results update immediately as values change.
// How to use it
- Choose the calculation mode.
- Enter the two values.
- Review and copy the result.
// Frequently asked questions
How is percentage change calculated?
It compares the difference between two values against the starting value and expresses it as a percentage.
Is the calculation local?
Yes. All math runs in your browser.