Common Multiple Calculator: Find LCM & Multiples

Calculate Common Multiples & Least Common Multiple (LCM)

Separate multiple positive integers with commas. Only positive integers are allowed.

Use our Common Multiple Calculator to quickly find the common multiples and the Least Common Multiple (LCM) for any set of integers. Simplify math problems, understand number relationships, and check your work effortlessly. Enter your numbers and get instant, accurate results for number theory and everyday calculations.

Formula:

The common multiples of a set of integers are numbers that are multiples of each integer in the set. The Least Common Multiple (LCM) is the smallest positive common multiple.

There are several methods to find the LCM, including prime factorization or listing multiples. For example, to find the LCM of 4 and 6:

  • Multiples of 4: 4, 8, 12, 16, 20, 24, ...
  • Multiples of 6: 6, 12, 18, 24, 30, ...

The common multiples are 12, 24, ... The LCM is the smallest common multiple, which is 12.

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