How it works
The least common multiple is the smallest positive integer divisible by every input. Methods include listing multiples, max prime powers, and lcm(a, b) = |a · b| / gcd(a, b).
lcm(a, b) = |a · b| / gcd(a, b)
When to use
Use this tool when you need to: try 330, 75, 450, 225 (LCM = 4950) or 21, 14, 38 (LCM = 798). Related: GCF and Factor calculators.
How to use this tool
- Enter your values in the fields above.
- Review the formula and any mode options for your problem.
- Read the result and the step-by-step solution.
Try 330, 75, 450, 225 (LCM = 4950) or 21, 14, 38 (LCM = 798). Related: GCF and Factor calculators.
Frequently asked questions
- What is the Least Common Multiple Calculator?
- The least common multiple is the smallest positive integer divisible by every input. Methods include listing multiples, max prime powers, and lcm(a, b) = |a · b| / gcd(a, b).
- How do I use the Least Common Multiple Calculator?
- Enter the required values, then calculate. The Least Common Multiple Calculator shows results, formulas, and step-by-step work when available. No account is required.
- What formula does the Least Common Multiple Calculator use?
- lcm(a, b) = |a · b| / gcd(a, b)
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