LCM Calculator
LCM(a,b) = |a × b| ÷ GCF(a,b)GCF=6; LCM=12×18÷6=36
Free online tool
LCM Calculator
Enter two integers to find their LCM.
Instant calculation
LCM Calculator
Enter two integers to find their LCM.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter first number
Type the first integer.
- 02
Enter second number
Type the second integer.
- 03
See LCM
Calculate to see the least common multiple.
The formula
How this calculation works
The least common multiple is the smallest positive integer divisible by both numbers.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
LCM of 12 and 18?
GCF=6; LCM=12×18÷6=3636Common questions
Questions about this calculation
What is the LCM Calculator?
The LCM Calculator helps you find the least common multiple of two numbers. Enter your values and select Calculate to get an instant result.
How is the result calculated?
The least common multiple is the smallest positive integer divisible by both numbers.
Can you show an example?
Example: LCM of 12 and 18? — 36.
Is my data saved when I use the LCM Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the LCM Calculator free to use?
Yes. The LCM Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
Continue calculating