LCM & GCD Calculator

First Number

Second Number

First Number

Second Number

Third Number

Formula

GCD: Euclidean algorithm | LCM(a,b) = a×b / GCD(a,b)

What is LCM?

The Least Common Multiple is the smallest number divisible by both numbers. LCM(4,6)=12 because 12 is the smallest number divisible by both 4 and 6.

What is GCD?

The Greatest Common Divisor (also called HCF) is the largest number that divides both numbers evenly. GCD(12,18)=6.

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