CalculateMeasure

Math & Geometry

Least Common Multiple Calculator

Find the least common multiple of two positive integers.

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Calculator guide

How to use the Least Common Multiple Calculator

Find the least common multiple of two positive integers. Enter the requested values and select Calculate. The result and supporting values are produced locally in your browser.

Formula

LCM(a, b) = |a × b| ÷ GCF(a, b)

Worked example

The LCM of 12 and 18 is 36.

What to keep in mind

  • The LCM is the smallest positive integer divisible by both inputs.

Methodology

This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Verify assumptions, units, and source values for your specific use case.

Review standard: Level A · Standard formula. How calculator reviews work.

Frequently asked questions

What does this calculator calculate?

Find the least common multiple of two positive integers.

How is the result calculated?

LCM(a, b) = |a × b| ÷ GCF(a, b).

Can I use the result for an important decision?

Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.

Does CalculateMeasure store the values I enter?

The calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.