Percentage Calculator
Calculate percentages, changes, increases, decreases, and tips.
Math Ninja
percentage calculator free
percent calculator online
calculate percentage of a number
percentage change calculator
discount calculator
tip calculator online
what percent of
Loading tool...
About this tool
A comprehensive percentage calculator with five modes: What is X% of Y, X is what % of Y, X is Y% of what, percentage change, and value after increase/decrease. Includes a tip calculator with bill splitting. Shows formulas and calculation history.
Frequently Asked Questions
Enter the percentage and the number. For example, "25% of 200" = 50. The calculator also handles reverse operations: "50 is what percent of 200?" = 25%. Multiple modes cover all percentage scenarios.