GCF Calculator (Greatest Common Factor)

Free online calculator to find the Greatest Common Factor (GCF/GCD) of two numbers with step-by-step explanations.

Find the GCF

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Result
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Step-by-Step Explanation

Enter two valid numbers above to see the mathematical breakdown.

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What is GCF?

The Greatest Common Factor (GCF), also known as the Greatest Common Divisor (GCD), is the largest positive integer that perfectly divides both numbers without leaving a remainder. It is widely used to simplify fractions to their lowest terms.

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