Simplify the Ratio 3:9
The ratio 3:9 simplifies to 1:3.
How to use this tool
- Enter a and b in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your simplified ratio and the full breakdown beneath it.
Reduce 3:9 to lowest terms — the simplified ratio is 1:3.
Frequently asked questions
- How do you simplify a ratio?
- Find the GCD of a and b, then divide both by it. For example, 12:8 → GCD=4 → 3:2.