GCD Calculator: Find the Greatest Common Divisor

5/2/2026

6 min read

The greatest common divisor (GCD) is a fundamental concept in mathematics

Explanation

The GCD is the largest number that divides both numbers without leaving a remainder

Formula
gcd(a, b) = ?
where gcd is the greatest common divisor of a and b
Example

Find the GCD of 48 and 18

How to use the related calculator

Enter the two numbers in the input fields and click the 'Calculate' button to find the GCD


Try the related calculator
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FAQ
What is the GCD?

The greatest common divisor (GCD) is the largest number that divides both numbers without leaving a remainder


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