All Tools VerseFind the Least Common Multiple (LCM)
Find the least common multiple (LCM) of two or more integers, the smallest number they all divide.
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How to Use Find the Least Common Multiple (LCM)
- Paste your integers. One whole number per line, at least two of them.
- Find the LCM. The smallest number they all divide into is calculated instantly.
- Use the result. The LCM is handy for adding fractions and lining up cycles.
- Copy the result. Click Copy result. It all runs in your browser.
Frequently Asked Questions
What is the least common multiple?
It is the smallest whole number that each of your integers divides into with no remainder.
How is it calculated?
From the greatest common divisor: the LCM of two numbers is their product divided by their GCD, applied across the whole list.
What is the LCM useful for?
Adding or comparing fractions with different denominators, and finding when repeating cycles line up again.
What if one of the numbers is zero?
The least common multiple is zero, since zero is a multiple of every number.
Is my data uploaded?
No. The calculation runs in your browser and your numbers never leave the tab.
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