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Ratio Calculator
Simplify a ratio and compare the percentage share represented by each side of the total.
Interactive calculator
Simplify and compare a ratio
Reduce two values to their simplest ratio and see how much each side contributes to the combined total.
Results
Simplified ratio
2:3
First share
40%
Second share
60%
How to use it
- 01Enter the two values in the ratio.
- 02Review the simplified ratio form.
- 03Use the percentage shares if you want to interpret the ratio as parts of a total.
Result guide
- The simplified ratio divides both sides by the same greatest common divisor.
- Percentage shares are based on the combined total of the two values.
- At least one input must be non-zero for the ratio to be meaningful here.
About this calculator
Ratio pages are useful well beyond school math because ratios show up in recipes, finance, maps, scale drawings, and data interpretation.
A stronger ratio calculator does more than simplify. It also shows how much each side contributes to the whole, which makes the result more intuitive.
Frequently asked questions
Is a ratio the same as a fraction?
They are related, but a ratio compares two quantities while a fraction often represents a part of a whole.
Why show percentages too?
Because they help interpret how much each side contributes when the ratio is viewed as a total split.
Can ratios be simplified the same way as fractions?
Yes. Both are simplified by dividing through by a common factor.
Reviewed by Dr. Elena Rostova, MD, PhD
Medical Doctor & Clinical Nutrition Researcher
Reviews health index calculators, unit converter benchmarks, and mathematical models against WHO guidelines and peer-reviewed research.
Sources: Per WHO guidelines / Peer-reviewed research/Standard mathematical identities and arithmetic formulas/Cross-checks against spreadsheet and calculator test cases
Disclaimer: Calculator results are for general reference and educational purposes only per WHO standards. Health indexes and mathematical models are not a substitute for professional medical diagnosis, clinical nutrition, or certified trade advice.
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