Ratio Calculator

Simplify ratios and calculate ratio values instantly.

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What is a Ratio?

A ratio compares two quantities and shows the relationship between them. Ratios are commonly written using a colon, such as 2:3.

For example, if there are 10 apples and 5 oranges, the ratio of apples to oranges is 10:5, which simplifies to 2:1.

How to Use the Ratio Calculator

Enter the first number and second number in the calculator. Click "Calculate Ratio" to simplify the ratio and see the decimal relationship and percentage.

Learn More About Ratios

Want to understand how ratios are calculated? Read our detailed guide covering ratio formulas, simplifying ratios, equivalent ratios, examples and common mistakes:

How to Calculate Ratio: Formula, Examples & Easy Guide

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What Is a Ratio Calculator?

A Ratio Calculator is a free online tool that helps you calculate, simplify and compare ratios. Ratios are commonly used to compare two or more quantities and can be useful in mathematics, finance, cooking, measurements and everyday situations.

What Is a Ratio?

A ratio shows the relationship between quantities. For example, a ratio of 2:3 means that for every 2 units of one quantity, there are 3 units of another quantity.

How to Simplify a Ratio

To simplify a ratio, divide both parts by their greatest common factor. For example, 10:15 can be simplified to 2:3 by dividing both numbers by 5.

Equivalent Ratios

Equivalent ratios represent the same relationship. Multiplying or dividing both parts of a ratio by the same non-zero number produces an equivalent ratio.

Why Use a Ratio Calculator?

A ratio calculator makes it easier to simplify ratios and compare quantities without performing the calculations manually.

Ratio Calculator FAQs

What does a ratio represent?

A ratio represents the relationship between two or more quantities by comparing their relative sizes.

How do you simplify a ratio?

Divide all parts of the ratio by their greatest common factor to express the ratio in its simplest form.

What is an equivalent ratio?

An equivalent ratio has the same relationship between quantities even though the numbers may be different.

Where are ratios used?

Ratios are used in mathematics, recipes, maps, financial calculations, measurements, statistics and many everyday situations.

Use our free Ratio Calculator above to simplify and calculate ratios quickly.