LCM Calculator
Find the least common multiple and greatest common factor for two or more integers.
Find LCM and GCF for multiple integers.
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First fraction
Second fraction
Enter one positive whole number up to 12 digits.
Enter 2 to 12 signed integers, separated by spaces or commas.
ResultFactorsLCM and GCF
- Reduced fraction
- Mixed number
- Decimal
Working
- Expression
- Reduction
- Prime factorization
- Classification
- All positive factors
- Factor pairs
- Least common multiple
- Greatest common factor
Prime-factor working
How to use LCM Calculator
Enter integers separated by spaces or commas. Negative values use their absolute values; an input of zero makes the LCM zero.
Private, local processing
Your input and results are not uploaded or stored. They remain in this browser tab.
Frequently asked questions
What does LCM Calculator do?
Find the least common multiple and greatest common factor for two or more integers.
Is my data uploaded?
Your input and results are not uploaded or stored. They remain in this browser tab.
What should I check when using LCM Calculator?
Enter integers separated by spaces or commas. Negative values use their absolute values; an input of zero makes the LCM zero.