How to use this calculator

The least common multiple is the smallest nonnegative multiple shared by both inputs.

The method

LCM(a,b) = |ab| / GCD(a,b)

Enter your values in the labeled fields and choose Calculate. The result panel shows the answer and supporting values when useful.

WORKED EXAMPLE INPUT

First integer: 18, Second integer: 24

Select Calculate to evaluate these example values.

Scope and limitations

Inputs are limited to safe whole numbers. Uses real-number arithmetic and rounds display values without changing the entered inputs. Check important results independently.

Common questions

Can I use different units?

Use consistent units unless this page is a unit converter. The result follows the units implied by the inputs.

Are results exact?

Displayed values may be rounded. Keep extra precision for important follow-up calculations.

Methods & verification

Formulas use standard mathematical definitions and fixed unit factors where applicable. See our methodology for numerical conventions, rounding, privacy, and limitations.