🍋 Math Tools
Ratio Calculator
Simplify, scale, and find equivalent ratios
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About Ratio Calculator
Work with ratios in three modes: simplify a ratio to its lowest terms, scale a ratio by a factor, or find equivalent ratios. Supports 2-part and 3-part ratios.
How It Works
For simplification, the tool finds the GCD of the ratio parts and divides each by it. For scaling, it multiplies each part by the scale factor. For equivalents, it generates ratios by multiplying by integers 2 through 10.
Step by Step
- 1 Enter a ratio (e.g., 12:8 or 3:4:5)
- 2 Select an action: simplify, scale, or find equivalents
- 3 For scaling, enter the scale factor
- 4 Click Calculate to see the result
Tips
- Use colons or spaces to separate ratio parts (3:4 or 3 4)
- Simplify ratios to make them easier to compare
- Scale ratios when converting recipe quantities
- Three-part ratios like 2:3:5 are fully supported
Frequently Asked Questions
How do you simplify a ratio?
Divide all parts by their greatest common divisor (GCD). For example, 12:8 → GCD is 4 → 3:2.
What is an equivalent ratio?
Equivalent ratios represent the same proportion. For example, 1:2, 2:4, 3:6, and 4:8 are all equivalent ratios.