GCD/LCM Calculator
Free online gcd/lcm calculator. Greatest common divisor and least common multiple. Accurate and easy to use.
Numbers
Results
GCD
6
LCM
36
GCD(12, 18) × LCM(12, 18) = 6 × 36 = 216
12 × 18 = 216
✓ Verified: GCD × LCM = a × b
Euclidean algorithm steps
18 = 1 × 12 + 6
12 = 2 × 6 + 0
GCD = 6
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