Ratio of 2 Numbers Calculator

The Ratio of 2 Numbers Calculator simplifies two numbers into their lowest-terms ratio and also shows the decimal and percentage relationship between them.

Formula

Ratio = A : B, divided by the greatest common divisor
  • Both numbers are divided by their greatest common divisor (GCD) to reach lowest terms.
  • The decimal form is simply A ÷ B.

8 and 12

Inputs
  • First Number: 8
  • Second Number: 12

GCD(8, 12) = 4, so 8:12 simplifies to 2:3 (decimal 0.667).

Frequently asked questions

How do you simplify a ratio?
Divide both numbers by their greatest common divisor. For 8:12, the GCD is 4, giving 2:3.