Reduce a ratio to its simplest form, or solve a proportion like A:B = C:? for the missing value. It's a quick, private tool for recipes, scale drawings, mixes and side-by-side comparisons.
Ratio Calculator gives you accurate results instantly, with the underlying formula shown so you can trust the numbers.
By dividing both numbers by their greatest common divisor.
Yes — enter C to solve A:B = C:? for the fourth term.
Simplify them two numbers at a time using their common divisor.
Simplified ratio 16 : 9