Percentage Calculator
Work out percentages, increases, decreases & of-totals.
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What is % of ?
= 30
is what percent of ?
= 20%
Percentage change from to ?
= +25%
Free percentage calculator
Three common percentage questions, all on one page and updating as you type:
- X% of Y — e.g. what is 20% of 150? (Answer: 30)
- X is what percent of Y — e.g. 30 is what percent of 150? (Answer: 20%)
- Percentage increase or decrease — e.g. from 100 to 125 is a +25% change.
Everyday uses
Work out discounts and sale prices, tips at a restaurant, tax amounts, grade scores, or how much a price went up or down. For loan and mortgage percentages, try the mortgage calculator.
How percentages work
"Per cent" means "per hundred." To find X% of a number, multiply the number by X and divide by 100. To express one number as a percentage of another, divide the first by the second and multiply by 100.
Frequently asked questions
What can this percentage calculator do?
It finds X% of a number, works out what percent one number is of another, and calculates percentage increase or decrease.
How do I find a percentage of a number?
Multiply the number by the percentage and divide by 100. For example 20% of 150 is 150 × 20 ÷ 100 = 30.