GCD & LCM Calculator

Find the Greatest Common Divisor and Least Common Multiple of two numbers instantly. A perfect utility for math homework, proportions, and coding algorithms.

First Number

Second Number

GCD (Divisor)

LCM (Multiple)

Formula Relationship: The product of two numbers is equal to the product of their GCD and LCM.
12 × 18 = 6 × 36 = 216