GCF & LCM Calculator

Find the Greatest Common Factor (GCF) and Least Common Multiple (LCM) of two or more integers.

Enter 2–20 positive integers separated by commas or spaces

How to Use This Calculator

  1. Enter your Numbers — Enter 2–20 positive integers separated by commas or spaces.
  2. Click Calculate to see instant results with a step-by-step breakdown.
  3. Use the Share button to copy a link with your inputs pre-filled.

⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.

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