On this page is a *fraction to ratio calculator*. Enter your fraction, and we will convert it to a ratio of the form set:not in set, converting from fraction of a whole.

The tool lets you enter a fraction written improperly as a comparison, or properly as a part of a whole group.

## Fraction to Ratio Calculator

## Convert a Fraction to a Ratio

Fractions and ratios are exactly the same mathematically, but we use them to describe different situations due to tradition. Fractions are almost always used to describe part of a whole. Ratios are usually used to compare two independent numbers, although sometimes are also used on parts of a whole.

*For example:*

- In a class, there are 12 boys and 10 girls
- 12/22 students are boys
- 12:10 boy to girl ratio
*(Less commonly)*12:22 boy to student ratio

So, you need to know which ratio and fraction combination you’d like to use the tool. If the fraction is describing a part of a whole, then you need to subtract the numerator to find the part of the set that isn’t described. For example:

12/22 students are boys, 10/22 students are girls.

and:

Also, check out the ratio to fraction calculator for more.

## Using the Fraction to Ratio Calculator

To use the fraction to ratio calculator, enter the fraction in the **Fraction** box in the top. Enter your numerator (top) on the left and denominator (bottom) on the right.

Next, explain how your fraction describes the set:

**Of a whole:**Almost always, fractions are written as some number of a whole group.**Comparing numbers:**In the rare case a fraction improperly describes two unlike numbers, choose this option.

Next, hit the **Convert to Ratio** button. The tool will then do the math and provide a simplified whole number ratio in the **Ratio** box.

Som*e related tools:*

*Also, see our other calculators and tools.*