GCD & LCM Calculator

Find the greatest common divisor and least common multiple of two integers.

How this calculator works

Enter the values for first integer, second integer. The result applies the displayed method and rounds only for presentation.

Formula / method

GCD uses common factors; LCM(a,b) = |a × b| ÷ GCD(a,b).

Worked example

Worked example: First integer = 24; Second integer = 36.

Assumptions and limitations

The inputs use the units shown and the displayed gcd & lcm calculator method applies to the situation being estimated.

This gcd & lcm calculator uses the stated formula and supplied units; unusual inputs, local rules or professional context can change the interpretation.