Ratio Calculator
Simplify ratios, scale them to an equivalent ratio and compare two ratios. Handy for recipes, mixes, geometry and proportions.
How to use
- 1
Choose what you need: simplify, scale or compare.
- 2
Enter the ratio numbers.
- 3
Read the result instantly, with reduced terms shown.
How it works
Simplifying divides both sides by their greatest common divisor. Scaling keeps the proportion constant while one side changes. Comparing uses the cross-product method to avoid division rounding.
Frequently asked questions
What does it mean to simplify a ratio?
Reduce both numbers by their greatest common divisor so they are the smallest possible whole numbers - 8:12 simplifies to 2:3.
Can the tool handle decimals?
For the best results use whole numbers. Decimals work in percentage-style problems covered by the percentage calculator.
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