GCF & LCM Calculator

Greatest common factor and least common multiple of any integers.

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See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use GCF & LCM Calculator

Follow these steps — everything happens instantly in your browser.

  1. 1

    Step 1. Enter two or more integers separated by commas.

  2. 2

    Step 2. The GCF and LCM update instantly using the Euclidean algorithm.

  3. 3

    Step 3. The step-by-step prime factorizations are shown for verification.

Why use this tool

Frequently asked questions

Everything you might want to know about gcf & lcm calculator.

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