Percentage Calculator

Calculate X% of Y, find what percent one number is of another, and solve percentage increase problems in one place.

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Enter your details and press Calculate to see results.

Formula

result = value × (percentage ÷ 100)

Example

What is 25% of 200? Multiply 200 by 25 ÷ 100 = 0.25. The answer is 50.

How to calculate a percentage of a number

A percentage is simply a fraction of 100. To find X% of Y, convert the percentage to a decimal by dividing by 100, then multiply by Y.

This calculator shows that multiplication directly, so you can copy the method whenever you need to do it by hand.

When to use it

Use this tool for discounts, taxes, tips, interest, statistics and any situation where you need a portion of a whole. If you instead need to know how two numbers relate to each other, try the percentage increase or decrease calculators.

Frequently asked questions

How do I calculate percentage manually?

Divide the percentage by 100 to get a decimal, then multiply by the total. For 15% of 80: 15 ÷ 100 = 0.15, and 0.15 × 80 = 12.

What is 10% of a number quickly?

Move the decimal point one place to the left. 10% of 250 is 25. From there you can double for 20%, halve for 5% and so on.

Is percentage the same as percentile?

No. A percentage is a fraction of a whole; a percentile describes rank within a data set (the 90th percentile is above 90% of values).

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