LCM Calculator

Find the least common multiple of two numbers.

Least common multiple 12

Formula: LCM = a × b ÷ GCF

Step-by-step with your numbers:
1. Values used:
2. First number = 4
3. Second number = 6
4.
5. Least common multiple = 12
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The smallest number both values divide into evenly.

The math behind it

LCM(a,b) = a × b ÷ GCF(a,b).

Worked example

LCM(4, 6) = 12.

FAQ

Use?

Adding fractions with different denominators.