GCF (Greatest Common Factor) or GCD (Greatest Common Divisor) is the largest number that divides evenly into two or more numbers. For example, GCF of 12 and 18 is 6.

LCM (Least Common Multiple) is the smallest number that is a multiple of two or more numbers. For example, LCM of 12 and 18 is 36 (multiples of 12: 12,24,36... multiples of 18: 18,36...).

How are GCF and LCM related?

For two numbers a and b: GCF(a,b) × LCM(a,b) = a × b. This relationship allows you to find one if you know the other. For 12 and 18: 6 × 36 = 12 × 18 = 216.

Biggest Calculator Hub

Math & StatisticsVerifiedFeb 2026

LCM and GCF Calculator

Name: LCM and GCF Calculator
Author: Biggest Calculator Hub

Find the LCM (Least Common Multiple) and GCF (Greatest Common Factor) of two or more numbers using the Euclidean algorithm.

lcm-gcf.calculatorready

How to Use the LCM and GCF Calculator

This free lcm and gcf calculator helps you quickly calculate gcf (greatest common factor). Simply enter your values in the fields above and click "Calculate" to see your results instantly.

Understanding Your Results

After entering your information, the calculator will display your results including gcf (greatest common factor), lcm (least common multiple), common factors, lcm calculation. Each result is calculated using standard formulas used by financial professionals and experts in the field.