Ratio Calculator

Use this free Ratio Calculator to simplify ratios, compare values, and find missing numbers in equivalent ratios. It is quick, easy, and helpful for school, math homework, cooking, business, and everyday calculations.

Simplify a ratio or solve a missing value in an equivalent ratio.

Enter 3 values and leave 1 box empty to find the missing number.

: = :

How This Ratio Calculator Works

A ratio compares two numbers and shows their relationship. For example, 12:18 can be simplified to 2:3. This calculator helps you simplify ratios and solve equivalent ratios when one value is missing. It is useful for math, recipes, scaling, finances, and many real-life situations.

Why Use a Ratio Calculator?

  • Quickly simplify ratios to their lowest terms
  • Easily solve missing values in equivalent ratios
  • Save time compared to manual calculations
  • Reduce errors when working with numbers
  • Helpful for students learning math concepts
  • Useful for cooking, scaling recipes, and measurements
  • Great for budgeting, business, and financial comparisons
  • Works instantly on both desktop and mobile devices

Ratio Calculator FQAs

What is a ratio?

A ratio compares two quantities. It can be written in different forms, such as 2:3, 2 to 3, or 2/3.

How do you simplify a ratio?

To simplify a ratio, divide both numbers by their greatest common divisor. For example, 12:18 becomes 2:3.

What is an equivalent ratio?

Equivalent ratios have the same value even though the numbers are different. For example, 2:3 and 4:6 are equivalent ratios.

Where are ratios used in real life?

Ratios are used in cooking, maps, school math, construction, budgeting, business, and comparing quantities.

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