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GCF Calculator
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The greatest common factor (gcf), also known as the highest common factor (hcf) for two or more numbers is the greatest (largest) number (factor) that divides the all those numbers.

GCF Calculator (or Greatest Common Factor Calculator) is a tool which takes two numbers, and calculates the GCF of those two numbers.

 

Steps for Finding GCF

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Step 1 :  

List of all the factors of the given numbers.



Step 2 :  

Now, list the common factors and choose the greatest(largest) one.



Examples on gcf Calculator

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  1. Find the GCF of 18 and 24?


    Step 1 :  

    The factors of 18 are: 1, 2, 3, 6, 9, 18


    The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24



    Step 2 :  

    The common factors of 18 and 24 are: 1, 2, 3, 6


    The greatest common factors(gcf) of 18 and 24 is 6



    Answer  :  

    Greatest Common Factor (GCF) = 6



  2. Find the GCF of 20 and 50?


    Step 1 :  

    The factors of 20 are: 1, 2, 4, 5, 10, 20


    The factors of 50 are: 1, 2, 5, 10, 25, 50



    Step 2 :  

    The common factors of 18 and 24 are: 1, 2, 5, 10


    The greatest common factors(gcf) of 20 and 50 is 10



    Answer  :  

    Greatest Common Factor (GCF) = 10



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