Percentage Calculator
Calculate percentages quickly with multiple calculation modes: find what percentage one number is of another, calculate a percentage of a number, find percentage increase or decrease between two values, and more. Useful for taxes, discounts, grades, tips, and everyday math. Instant results, no download required.
Percentage Calculator
Calculate percentages, changes, and proportions instantly.
How to Use Percentage Calculator
- 1Select the calculation type (% of number, X is what % of Y, % change)
- 2Enter the required values
- 3View the result instantly
Your Privacy is Protected
Percentage Calculator runs entirely in your browser. Your files and data are never uploaded to any server, never stored, and never shared. Everything happens locally on your device using secure browser APIs.
No server uploadNo account required100% freeWorks on all devices
Frequently Asked Questions
How do I calculate a 20% discount?
Use the "X% of Y" mode — enter 20 as the percentage and your original price as Y. The result is the discount amount.
Why Use This Tool?
Files never leave your device
No upload to any server
Instant processing in browser
100% free, no account needed
Tags
percentagecalculatorpercentmathpercentage calculator online