## About This Tool

The online Greatest Common Factor Calculator is used to calculate the greatest common factor (GCF) of two or more whole numbers.

## Greatest Common Factor (GCF)

In mathematics, the greatest common factor (gcf), also known as the greatest common denominator, highest common factor (hcf), largest common factor or greatest common divisor (gcd), of two or more non-zero integers, is the largest positive integer that divides the numbers without a remainder.