How it works
Percentages show up everywhere — discounts, tips, exam scores, price changes. Use the tabs below to find X% of a number, work out what percentage one number is of another, or increase/decrease a number by a percentage.
Home / Everyday Math / Percentage Calculator
Percentage Calculator
Three calculators in one: find a percentage, work out what % a number is, or apply an increase or decrease.
—
Result
—
Percentage
—
Result
FAQ
How do I calculate a percentage increase?
Enter the starting value and the percentage, choose 'Increase', and the tool adds that percentage of the value to itself.
What's the difference between percentage and percentage points?
A change from 20% to 25% is a 5 percentage-point increase, but a 25% relative increase — this tool calculates the relative percentage.
Can I use decimals?
Yes, all three calculators accept decimal numbers.