Greatest common divisor calculator

Enter your numbers separated by spaces, commas or tab in the input field below then click the "Calculate" button to start the calculation.

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How to use this calculator?

The greatest common divisor calculator or GCD calculator lets you quickly find a greatest common divisor of a set of numbers. You can use this calculator to find a greatest common divisor of 2 up to 10 numbers by separate each number by commas, spaces or tabs. Each number in the list can be between 0-1,000,000,000,000,000 and all of the numbers must not be zero.

What is the greatest common divisor?

The greatest common divisor of two or more integers, which are not all zero, is the largest positive integer that divides each of the integers. For example, the greatest common divisor of 8 and 12 is 4 because it is the largest number that can divide both number without remainder.