About Our GCF Calculator
Our GCF Calculator is a fast and easy way to find the greatest common factor (also called greatest common divisor or highest common factor) of two or more numbers. Just enter your numbers, and our tool will instantly show you the GCF, along with the steps. This is perfect for simplifying fractions, solving math problems, or checking your homework!
Examples
Example 1
Input: 12, 18
Output: 6
The factors of 12 are 1, 2, 3, 4, 6, 12. The factors of 18 are 1, 2, 3, 6, 9, 18. The greatest common factor is 6.
Example 2
Input: 24, 36, 60
Output: 12
The GCF of 24, 36, and 60 is 12.
Frequently Asked Questions
What is GCF?
GCF stands for Greatest Common Factor. It is the largest number that divides two or more numbers without leaving a remainder.
How do you find the GCF?
List all the factors of each number, then find the largest factor that appears in every list.
Can I use this calculator for more than two numbers?
Yes! You can enter as many numbers as you like, separated by commas.