**Greatest Common Factor (GCF) Calculator**

Welcome to the Greatest Common Factor (GCF) Calculator. Here you can enter two or three numbers and we will calculate your numbers' GCF.

Please enter two or three numbers below so we can calculate the Greatest Common Factor (GCF) for you:

Here are some samples of what our GCF Calculator can calculate:

**Greatest Common Factor (GCF) of 3 and 9**

**Greatest Common Factor (GCF) of 6 and 12**

**Greatest Common Factor (GCF) of 7 and 15**

**Greatest Common Factor (GCF) of 2, 4 and 6**

**Greatest Common Factor (GCF) of 5, 20 and 30**

**Greatest Common Factor (GCF) of 6, 24 and 36**