Simplify a Ratio
Reduce a pair of positive whole numbers to their smallest equivalent ratio using their greatest common divisor.
How to use Simplify a Ratio
- Enter “First whole number”, using the units and limits shown in its label.
- Enter “Second whole number”, using the units and limits shown in its label.
- Select Calculate or Process. Review the result and any validation message before copying or downloading available output. Reset clears the result and restores the starting inputs.
Method & assumptions
Reduced ratio = (a ÷ gcd(a,b)) : (b ÷ gcd(a,b)).
Worked example
1920:1080 simplifies to 16:9.
Results and projections are informational estimates, not financial, medical, legal, tax, or property advice. Check assumptions, units, rounding, and local requirements independently. Investment illustrations do not guarantee returns. Keep original files and check transformed output before use.
Questions, answered
Can I enter fractional terms?
Use whole numbers. Scale fractional terms by the same power of ten first, so 1.5:2 becomes 15:20.
Where does this calculation run?
It runs locally in your browser. Enter plain numbers without currency symbols or thousands separators; use the same currency and measurement units throughout unless a converter explicitly asks for units.