LCM Calculator (Least Common Multiple)

Your details

First positive integer (fractions are rounded to the nearest whole number).
Second positive integer.
Third number to include in the LCM (optional).
Fourth number to include in the LCM (optional).
Fifth number to include in the LCM (optional).
Sixth number to include in the LCM (optional).
LCM
36

Least common multiple of all entered numbers

GCF6
LCM / GCF ratio6
Product / LCM ratio6
Numbers entered2
LCM36
GCF6

LCM(12, 18) = 36

  • The greatest common factor is 6, so the numbers share at least one prime factor.
  • The LCM is the smallest positive integer that both 12 and 18 divide without a remainder.
  • The LCM is useful for adding or subtracting fractions: it gives the least common denominator.

Next stepTo add fractions with these denominators, convert both to 36 and then add the numerators.

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