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How to Calculate LCM

Find the Least Common Multiple of two or more numbers.

The Formula

LCM(a,b) = |a×b| / GCD(a,b)

The lcm formula uses the mathematical relationship: LCM(a,b) = |a×b| / GCD(a,b). Each variable in the formula represents a measurable quantity that affects the final result.

Step-by-Step Method

  1. 1Identify all input values needed for the lcm calculation.
  2. 2Substitute your known values into the formula: LCM(a,b) = |a×b| / GCD(a,b).
  3. 3Perform the arithmetic operations in the correct order (PEMDAS/BODMAS).
  4. 4Check that your result has the correct units and is within a reasonable range.
  5. 5Verify using the interactive LCM Calculator to confirm your answer.

Related Topics

lcmleast common multiple

Use the Interactive Calculator

Skip the manual math — get instant results with our free LCM calculator.

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