Percentage Calculator
Quick percentage calculations — tip, discount, tax, and more. Enter your numbers for instant results.
About the Percentage Calculator
This free online percentage calculator handles three common percentage operations: (1) X% of a number — useful for calculating tips, discounts, and tax amounts; (2) Percentage change — find the increase or decrease from an old value to a new one; (3) X is what % of Y — determine what portion one number represents of another.
Example 1: What is 20% of $200? — $40 (a typical restaurant tip or discount).
Example 2: $100 → $125 is a 25% increase.
Example 3: 50 out of 200 is 25%.
How to use: Select the mode above, enter your numbers, and the result updates instantly. No sign-up or download required.
Disclaimer: This calculator is for informational purposes only. Results are estimates and should not be considered financial advice. Verify important calculations independently.