LCM calculator
Find the smallest positive multiple shared by two integers.
Formula
LCM(a,b) = a × b / GCF(a,b)
First integer = 12 · Second integer = 18
How to use
- Enter the first positive integer.
- Enter the second positive integer.
- Read the LCM.
Examples
- LCM(12, 18) = 36.
- LCM(15, 24) = 120.
Frequently asked questions
Are negative or decimal inputs accepted?
No. This tool uses positive whole numbers.
How does LCM help with fractions?
The LCM of the denominators is their least common denominator.
What is the limit?
Each integer must be at most 10000000.
How do I find common multiples?
Positive common multiples are k×LCM for positive integers k. This tool computes the LCM of two positive integers; it does not list multiples or accept decimals.
Sources
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