When this tool is useful
An equivalent-ratio calculator can help with recipes, mixtures, scale drawings and proportional comparisons. The result scales both parts consistently; check that the input values use compatible units.
How to use it
- Enter the two parts of the ratio.
- Supply the target value for the first part when you need an equivalent ratio.
- Calculate the matching second value and check that the ratio stays proportional.
Common uses
- Scaling a recipe or mixture
- Comparing proportional measurements
- Checking equivalent ratios for a maths exercise
Tips for a reliable result
Tips for a reliable result
Use values in the same units before simplifying a ratio. If the quantities describe different units, convert them first or the proportion may not be meaningful.
Frequently asked questions
How do I calculate an equivalent ratio?
Enter both parts of the ratio and a new value for the first part. The calculator scales the second part by the same factor.
Can I simplify a ratio such as 12:18?
Yes. The result is reduced by the greatest common divisor where the inputs can be represented as whole-number multiples.
Can it create a full ratio table?
It calculates one equivalent ratio for the target value you provide. Repeat with different target values to build a ratio table.
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