Ratio Calculator
Simplify a ratio and convert it to a decimal.
Simplified ratio
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As a decimal
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Results update as you type.
About this calculator
A ratio calculator reduces a ratio like 16:9 to its simplest whole-number form and shows it as a decimal. Ratios are used for aspect ratios, recipes, scale models, odds and mixing proportions.
Frequently asked questions
How do I simplify a ratio?
Divide both numbers by their greatest common divisor. 1920:1080 both divide by 120, giving 16:9.
What is the decimal of a ratio?
Divide the first number by the second. 16:9 is 16 ÷ 9 ≈ 1.778.
Results are estimates for general guidance only, not financial, medical or tax advice.