Calculate percentages, increases, decreases, and differences.
Percentage Calculator in 3 simple steps
Select what % of, % increase, % decrease, or % difference.
Input the values you want to calculate.
See the answer instantly with the formula shown.
What is X% of Y, X is what % of Y, % increase, % decrease, and % difference.
See the math behind each calculation.
Results update as you type.
Easy-to-use number inputs on any device.
Percentage calculations come up constantly — discounts, tips, grade scores, data analysis, and more. Our calculator handles all common percentage operations in one tool.
Calculate what percent one number is of another, find percentage increases and decreases, and determine values from percentages.