Free Ratio Calculator
Simplify ratios and solve proportions.
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About the Ratio Calculator
Free ratio calculator. Simplify a ratio to its lowest terms or solve a proportion by finding the missing value in an equivalent ratio.
How it works
- 1
Enter the ratio
Fill in the known values.
- 2
Solve or simplify
Leave a blank to solve for it.
- 3
Get the result
See the answer instantly.
Frequently asked questions
Yes — enter a ratio like 18:24 to reduce it to 3:4.
Yes — leave one value blank to solve the proportion.