Ratio Calculator
Simplify a ratio and scale it to an equivalent ratio using the same multiplier for both parts.
Simplified Ratio
2:3
Scaled Ratio
24:36
Ratio calculation
To simplify a:b, divide both a and b by their greatest common factor. To scale a:b by k, multiply both parts by k to get (a × k):(b × k).
Example calculation
A ratio of 12:18 has a greatest common factor of 6, so its simplified form is 2:3. Scaling 12:18 by 2 gives 24:36.
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by showing how much of one quantity there is relative to another.
How do you simplify a ratio?
Divide both parts of the ratio by their greatest common factor. For example, 12:18 simplifies to 2:3.
How do you scale a ratio?
Multiply both parts by the same number. For example, multiplying 2:3 by 4 gives the equivalent ratio 8:12.
Can ratios contain decimals?
Ratios can compare decimal quantities, but multiplying both parts by the same factor can make them easier to express as whole numbers.