Ratio Calculator
Simplify ratios or solve proportions with one missing value.
Simplify Ratio
Simplified:
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Enter two values to simplify.
Solve Proportion
Result:
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Enter known values and choose which to find.
Ratio Calculator
What this calculator helps you do
Use this ratio calculator to simplify ratios, compare values, and convert ratios into equivalent forms. It is useful for recipes, scale drawings, classroom work, and basic proportion checks.
How ratio simplification works
To simplify a ratio, divide both parts by their greatest common factor. For example, 12:18 simplifies to 2:3 because both values divide by 6.
Worked example
If a map scale ratio is 5:100, divide both numbers by 5 and you get 1:20. That makes the relationship easier to read and compare.
When this tool is useful
- Scaling ingredients or measurements
- Checking proportional relationships
- Reducing ratios to simplest form
Bottom line
This page is meant to give a clear simplified ratio and help you confirm the relationship quickly.