LCM Calculator

Calculate the Least Common Multiple (LCM) of two or more numbers. The LCM is the smallest positive integer that is divisible by all given numbers.

Enter Number

Enter positive integers only

📊 Result

LCM = 0

How to Use the LCM Calculator

Enter at least two positive integers in the input fields
Click "Add Another Number" to calculate LCM for more than two numbers
Click "Calculate LCM" to see the result
View detailed calculation steps below the result

What is LCM?

The Least Common Multiple (LCM) of two or more integers is the smallest positive integer that is divisible by each of the numbers. It's commonly used in fraction operations, scheduling problems, and many other mathematical applications.

LCM Calculation Methods

This calculator uses the prime factorization method to find the LCM:

Prime Factorization: Break down each number into its prime factors

Identify Common and Unique Factors: Find all prime factors with their highest powers

Multiply: Multiply all the prime factors with their highest powers to get the LCM

Example

To find LCM(12, 18):

12 = 2² × 3
18 = 2 × 3²
LCM = 2² × 3² = 4 × 9 = 36