Quickly calculate percentages, find what percent one number is of another, and work out percentage increase or decrease with a clear, easy-to-use calculator.
This page combines three common percentage calculations so you can solve everyday questions without moving between separate tools.
Use this when you want to find a percentage of a number.
Use this when you want to compare one number against another in percentage terms.
Use this when you want to measure how much a value changed.
Divide the percentage by 100 and multiply by the number. Example: 25% of 200 is 50.
If the new number is larger than the old one, it is an increase. If it is smaller, it is a decrease.
Yes. You can enter whole numbers or decimals such as 12.5, 0.75, or 199.99.
The standard percentage-change formula divides by the old value, so it does not work when that value is 0.
Students, shoppers, business owners, workers, and anyone who needs to compare or convert values into percentages.