Math calculator
GCD / LCM Calculator
Find the greatest common divisor and least common multiple of two numbers.
FormulaLCM(a,b) = abs(a x b) / GCD(a,b)
Formula
GCD and LCM
LCM(a,b) = abs(a x b) / GCD(a,b)
GCD of 12 and 18 is 6; LCM is 36.
FAQ5 common questions for this calculator.
FAQs
What does GCD mean?+
GCD is the largest whole number that divides each input without a remainder.
How does the GCD / LCM Calculator calculate the result?+
For the GCD / LCM Calculator, it uses the GCD and LCM: LCM(a,b) = abs(a x b) / GCD(a,b). GCD of 12 and 18 is 6; LCM is 36.
What information do I need to use the GCD / LCM Calculator?+
For the GCD / LCM Calculator, enter the known quantities requested by the calculator and use the units implied by the GCD and LCM. If a value is unknown, choose a calculator that solves for that specific variable.
How accurate is the GCD / LCM Calculator?+
GCD / LCM Calculator is mathematically reliable for the entered values and selected operation. It follows the GCD and LCM. Rounding, order of operations, and undefined cases can still affect interpretation.
What should I check before using the GCD / LCM Calculator result?+
For the GCD / LCM Calculator, check the input values, operation order, rounding precision, and undefined cases before using the result. Compare one changed value at a time when testing scenarios.
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Math guide
How to use the GCD / LCM Calculator
Find the greatest common divisor and least common multiple of two numbers. The page also explains the GCD and LCM and shows a practical example: GCD of 12 and 18 is 6; LCM is 36.
- 1
Enter your details
Enter the values for the gcd / lcm calculator scenario you want to check.
- 2
Check the calculation
Review the result alongside the GCD and LCM: LCM(a,b) = abs(a x b) / GCD(a,b).
- 3
Compare scenarios
Change one or more inputs to see how they affect the GCD / LCM Calculator result before you use the estimate.