Math & Numbers
LCM Calculator
Find the least common multiple of two or more integers.
How to use the lcm calculator
Find the least common multiple of two or more integers. Enter the requested values and select Calculate result. Check the units and options before interpreting the answer.
Formula and calculation method
For non-zero integers, LCM(a,b) = |a × b| ÷ GCD(a,b), applied successively.
Worked example
The LCM of 4 and 6 is 12.
Limitations and interpretation
Results depend on inputs, assumptions and rounding. Verify results before using them for consequential decisions. Health estimates are not medical diagnoses.
Frequently asked questions
Can I enter more than two numbers?
Yes, enter 2–30 integers.
What if an input is zero?
The result is zero if any input is zero.