Percentage Calculator
Calculate common percentage problems instantly. Find a percentage of a number, calculate what percentage one value is of another, or find the original value from a percentage.
Choose a calculation
Select the percentage calculation you need and enter your values.
Percentage ÷ 100 × Number
What is X% of Y?
Use this when you want to find a percentage of a number, such as 20% of 150.
= 30
X is what percent of Y?
Use this to compare one value to another, such as finding what percentage 25 is of 200.
= 12.5%
Common uses
- School and homework calculations
- Shopping and discount checks
- Business and revenue analysis
- Statistics and data comparison
- Everyday quick math
Free online percentage calculator
This percentage calculator helps you solve common percentage problems quickly and easily. You can calculate what a percentage of a number is, what percentage one value is of another, and what original value a percentage represents. It is useful for shopping, schoolwork, business calculations, statistics and everyday math.
How do percentages work?
A percentage means “per hundred.” For example, 25% means 25 out of 100. To find 25% of 200, you divide 25 by 100 and multiply by 200. The result is 50.
When should you use a percentage calculator?
Use a percentage calculator when you need a quick and accurate result without doing the formula manually. Percentages are commonly used for discounts, taxes, tips, growth, decreases, comparisons, grades, statistics and financial calculations.
Percentage Calculator FAQ
How do you calculate a percentage of a number?
Divide the percentage by 100, then multiply by the number. For example, 20% of 150 is 20 ÷ 100 × 150 = 30.
How do you find what percentage one number is of another?
Divide the first number by the second number, then multiply by 100. For example, 25 is 12.5% of 200.
What does percent mean?
Percent means “per hundred.” So 50% means 50 out of 100, or one half.
Can this calculator find the original value?
Yes. Use the original value mode to find what number a known percentage value came from.
Is this percentage calculator free?
Yes. This calculator is free to use and does not require signup.
Are my values stored?
No. The calculation runs locally in your browser and the entered values are not stored by UtilTools.