Greatest Common Factor Calculator
Find the greatest common factor of two or more whole numbers.
The greatest common factor (GCF), also called the highest common factor (HCF) or greatest common divisor (GCD), is the largest whole number that divides every number in a set with no remainder. Example: the factors of 12 are 1, 2, 3, 4, 6, 12 and the factors of 18 are 1, 2, 3, 6, 9, 18, so GCF(12, 18) = 6.
Find the GCF
Enter 2-10 whole numbers separated by spaces
How to use
It's really simple. Just enter two or more whole numbers separated by spaces into the input on the left and click "Calculate".
The calculator will work out the greatest common factor and also list out the factors for each number you add.
More GCF Calculations
For more examples of greatest common factor calculations, see the links below: