LCM Calculator

LCM abbreviation stands for Lowest Common Multiple. It is the smallest integer evenly divisible by two integers 'a' and 'b'. The Least Common Multiple (LCM) also referred to as the Least Common Denominator (LCD). Use the below online LCM calculator to calculate LCD. LCD is determined before fractions can be added, subtracted or compared. LCM can be calculated when it has more than two integers. Enter the numbers separated by commas in this Lowest Common Multiple calculator to find LCM.

Least Common Multiple Calculator

Result :


Find the LCM of 18 and 20


Prime Factors of 18 = 2x3x3
Prime Factors of 20 = 2x2x5
Common factors of 18 and 20 is 2.
Multiply it with the remaining factors = 2 x 3 x 3 x 2 x 5 = 180
Therefore, the LCM of 18 and 20 is 180