Least Common Multiple (LCM)
Calculate Least Common Multiple (LCM) instantly. Free online calculator with the exact formula, a worked example, and metric units. No signup required.
Least Common Multiple (LCM)
Number a
Number b
LCM
12
More about: Least Common Multiple (LCM)
What it calculates
The “Least Common Multiple (LCM)” calculator computes LCM from 2 parameters: number a, number b.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Number a = 4, Number b = 6 the result is 12.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.