Ratio Calculator
Calculate equivalent ratios and proportions
Simplify Ratio
:
2 : 3
Simplified Ratio
Solve Proportion (A:B = C:?)
:
=
:
20
Missing Value
Scale a Ratio
10 : 15
Scaled Ratio
Divide Amount by Ratio
40 and 60
Divided Values
Working with Ratios
Simplifying Ratios
Divide both parts by their greatest common divisor (GCD). For example, 24:36 simplifies to 2:3 by dividing both by 12.
Proportions
If A:B = C:D, then A×D = B×C (cross multiplication). Use this to find missing values in equivalent ratios.
Dividing by Ratio
To divide amount X in ratio A:B, first find the sum (A+B), then calculate each part: Part1 = X×A/(A+B), Part2 = X×B/(A+B).