Free Percentage Calculator

1. X% of Y

2. X is what % of Y

3. % Increase / Decrease

About

This website was created to make percentage calculations quick and simple. Whether you’re figuring out a discount, calculating a tip, or checking how much something has gone up or down in value, our percentage calculator is here to help.

FAQ

What is a percentage?
A percentage shows a part of a whole, based on 100. It’s written using the % symbol. For example, if there are 100 marbles and 30 of them are blue, then 30% of the marbles are blue.

How do you calculate a percentage?
To find a percentage, divide the part by the whole, then multiply by 100. For example, if 20 out of 50 apples are red, divide 20 by 50 to get 0.4, then multiply by 100. The answer is 40%, so 40% of the apples are red.

Why are percentages important?
Percentages are used every day — when shopping for sales, paying taxes, checking interest rates, or looking at data. Knowing how to work with percentages helps you better understand numbers and make smarter choices in daily life.