MathCalculator.app
Algebra

LCM Calculator

Find the least common multiple of two or more whole numbers using GCF-based steps.

Find LCM

Answer
LCM = 24
  1. Use LCM(a,b) = |a*b| / GCF(a,b) across 6, 8.
  2. Least common multiple = 24

How to use the lcm calculator

The LCM calculator finds the smallest positive number that is a multiple of every entered number.

  1. Enter two or more whole numbers separated by commas.
  2. The calculator computes GCF and uses it to get LCM.
  3. Use LCM for common denominators in fraction addition.

Formula or method

LCM(a, b) = |a * b| / GCF(a, b).

Worked examples

LCM of 6 and 8

Problem: 6, 8

Solution: GCF is 2, so LCM = 6 * 8 / 2 = 24.