LCM of 10 and 15

The least common multiple (LCM) of 10 and 15 is 30.

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How to use this tool

Enter first number and second number in the fields above.
Results update instantly as you type — or click Calculate.
Read your lcm and the full breakdown beneath it.

The LCM of 10 and 15 is 30, useful for adding fractions with denominators of 10 and 15.

Frequently asked questions

What is LCM?: The Least Common Multiple (LCM) of two integers is the smallest positive integer that is divisible by both numbers.