X is What Percent of Y Calculator

Calculating what one number is as a percentage of another number is a very common math problem. In this article, we'll cover exactly how you can calculate it, with links to a number of different example calculations.

Looking for percentage worksheets? Click here to see all of our free percentages worksheets.


Enter your numbers into the boxes below below and click "Calculate" to work out the percentage of the number.

is what percent of

To calculate one number as a percentage of another number, there are two really quick steps we need to follow. Let's say we want to know what 25 is as a percentage of 100. What we are really saying here is that this is a fraction of 25/100. First, we divide the numerator by the denominator:

25 ÷ 100 = 0.25

Once we know that, we simply need to multiply it by 100 to get our answer:

0.25 × 100 = 25%

Practice Percentage Worksheets

Like most math problems, percentages is something that will get much easier for you the more you practice the problems and the more you practice, the more you understand.

Whether you are a student, a parent, or a teacher, you can create your own percentage worksheets using our percentages worksheet generator. This completely free tool will let you create completely randomized, differentiated, percentage problems to help you with your learning and understanding of percentages.

Practice X is What Percent of Y Using Examples

If you want to continue learning about how to calculate what one number as a percentage of another is, take a look at the random calculations in the sidebar to the right of this blog post.

We have listed some completely random examples that you can follow along with to help you work through a number of problems.

Each article will show you, step-by-step, how to work out what X is as a percentage of Y and will help students to really learn and understand this process.

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