GCF and LCM Calculator

Find the Greatest Common Factor (GCF) and Least Common Multiple (LCM) of any set of numbers. Useful for fractions, algebra, and number theory.

❓ Frequently Asked Questions

What is GCF? +
The Greatest Common Factor is the largest number that divides all given numbers evenly.
What is LCM? +
The Least Common Multiple is the smallest number that is a multiple of all given numbers.