Ratio Calculator
Simplify ratios, scale proportions, and solve proportions with unknown terms.
Simplify ratio
:
Simplified ratio
12 : 18
2 : 3
GCD
0
Decimal ratio
0.6667
Interpretation
For every 2 units of the first, there are 3 units of the second
What is a ratio?
A ratio compares two quantities showing how many times one contains the other. It's written as A:B and means 'A is to B'. It's fundamental in mathematics, sciences, cooking, art, and finance.
Uses of ratios
Ratios are used for map scales, cooking recipes, chemical mixtures, financial proportions, screen aspects, and any comparison between quantities.
Proportions
A proportion is an equality between two ratios. If A:B = C:D, then A×D = B×C (cross products). This allows finding unknown values.