LCM & HCF Calculator
Greatest common divisor and least common multiple.
GCD / HCF (3 numbers)
6
LCM
72
How
Numbers: 12, 18, 24 GCD (greatest common divisor) = 6 LCM (least common multiple) = 72 Check: GCD ร LCM = product of pairs (for two numbers)
Fractions: simplify with GCD; add fractions by converting to the LCM denominator. Exact BigInt math.