Ratio Calculator - Simplify & Compare Ratios
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Ratio Calculator

Use this professional Ratio Calculator to simplify ratios, compare two ratios, scale proportions, and solve missing ratio values quickly. It is useful for students, teachers, recipes, finance, construction, design, and everyday calculations.

Simplify Ratios Compare Ratios Scale Values Instant Results

Calculate Ratio

Result

Your Answer

Enter values
Add your numbers and click calculate to get the ratio result.
Tip: A ratio compares two or more values. For example, 2:3 means for every 2 parts of one value, there are 3 parts of another value.

What Is a Ratio Calculator?

A Ratio Calculator is an online tool that helps you reduce, compare, and solve ratios. Instead of manually finding the greatest common divisor or setting up proportions, this tool gives you a clean answer instantly.

Ratios are commonly used in mathematics, cooking, construction, business analysis, design measurements, maps, and financial comparisons.

How It Works

  • Enter two values to simplify a ratio into its lowest form.
  • Use compare mode to check whether two ratios are equal.
  • Use missing value mode to solve proportions like A:B = C:X.
  • The calculator shows the formula, simplified answer, and explanation.

Ratio Formula

To simplify a ratio, divide both values by their greatest common divisor.

Example: 24:36 can be simplified by dividing both numbers by 12. The simplified ratio is 2:3.

For a missing value proportion, use cross multiplication: A : B = C : X, so X = B × C ÷ A.

Why Use This Tool?

  • Fast and accurate ratio calculations.
  • Helpful for students and teachers.
  • Useful for recipes, scaling, and proportions.
  • Practical for business, finance, and planning tasks.

Ratio Calculator FAQs

What does a ratio mean?
A ratio compares two values and shows how much of one value exists compared to another. For example, 4:5 means 4 parts of the first value and 5 parts of the second value.
How do I simplify a ratio?
To simplify a ratio, divide both numbers by their greatest common divisor. For example, 18:24 becomes 3:4 because both numbers are divided by 6.
Can this calculator compare two ratios?
Yes. Enter both ratios in compare mode, and the calculator will tell you whether they are equal or different using cross multiplication.
What is a missing ratio value?
A missing ratio value is an unknown number in a proportion. For example, in 2:3 = 6:X, the calculator can find the value of X.
Is this Ratio Calculator free?
Yes, this Ratio Calculator is free to use and works directly in your browser without requiring signup or installation.