Ratio Calculator
Simplify ratios, create equivalent ratios, or divide a total amount into 2-part or 3-part ratio shares.
Results
Simplified ratio
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Total ratio parts
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Equivalent / split result
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Decimal comparison
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Original ratio
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Greatest common divisor
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Calculation used
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Calculation details
Use this Ratio Calculator to simplify 2-part or 3-part ratios, create equivalent ratios, or divide a total amount according to a ratio.
Calculation Method
To simplify a ratio, divide every part by their greatest common divisor (GCD).
Simplified ratio = each ratio part ÷ GCD
To create an equivalent ratio, multiply every part by the same scale factor.
To divide a total by a ratio:
Share = total × individual ratio part ÷ total ratio parts
Example
Simplify the ratio 12:18.
The GCD of 12 and 18 is 6:
12 ÷ 6 = 2
18 ÷ 6 = 3
Therefore, 12:18 = 2:3.