Free GCD and LCM Calculator
Find the greatest common divisor and least common multiple of two integers.
GCD and LCM Calculator
Enter a value to begin.
How to use this gcd and lcm calculator
- Enter two non-zero whole numbers.
- Check the inputs and preview, then use the primary action.
- Download, copy or use the result shown by the tool.
How the result is calculated
Euclid’s algorithm finds the GCD; the LCM follows from the product divided by the GCD.
All calculation and transformation work happens in this browser tab. No entered value is sent to an Noler Tools application server.
Important limitations
Results are provided for convenience and should be checked independently before an important decision. A format or checksum result never authenticates an identity, document, account, licence, vehicle or registration.
Frequently asked questions
Is this gcd and lcm calculator free?
Yes. It is free to use and does not require an account.
Does Noler Tools save my input?
No. The input and result remain in temporary browser memory and are not uploaded or saved by this site.