FREE ONLINE TOOL

Free LCM
Calculator

Find the exact LCM of two or more integers with arbitrary precision. See GCD reduction steps, prime-power recipe, divisibility checks and multiples. Free and private in your browser.

About Free LCM Calculator

Find the exact least common multiple of two or more integers. See the GCD reduction chain, prime-power recipe when practical, divisibility proof, and the next common multiples — all without rounding.

Workspace options

  • Enter integers separated by commas, spaces or new lines

Available actions

  • Calculate LCM
  • Clear
  • 12 & 18
  • 24, 80, 121
  • 0 & 48
  • −21 & 6