LCM Calculator

Calculate the Least Common Multiple (LCM) of two or more numbers instantly.

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Features

Interactive Input

Easily add and remove numbers using a modern chip based interface.

Prime Factorization

See the exact prime factors (e.g., 12 = 2² × 3¹) for every number you enter.

Instant Calculation

Get the true LCM instantly using the highest power of primes method.

Educational Breakdown

Understand the math with a clear, step-by-step display of factors and powers.

Copy Results

One-click copy function for sharing or saving your answers.

About LCM Calculator

This advanced LCM Calculator uses the Prime Factorization method to find the Least Common Multiple of two or more numbers. The LCM is the smallest positive integer that is divisible by each of the numbers without leaving a remainder. Formula: LCM(a, b) = (a × b) / GCD(a, b) Unlike simple calculators, this tool provides a transparent breakdown of how the result is derived by showing the prime factors of each input number. It is an excellent resource for students learning number theory or checking their math homework.

How to Use LCM Calculator

  • 1
    Add Numbers

    Type a number and press Enter or click Add. Repeat for all numbers in your set.

  • 2
    Review List

    You will see your numbers appear as chips. Click the trash icon to remove any if needed.

  • 3
    Calculate

    Click the Calculate button to perform the Prime Factorization.

  • 4
    Analyze

    View the Result and the detailed Factorization Breakdown below.

LCM Calculator | Least Common Multiple (Prime Factorization)