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GCD & LCM Calculator
Find the greatest common divisor and least common multiple, with clear step-by-step working.
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Type two or more whole numbers. Negatives and decimals are supported.
Results
GCD
Greatest common divisor
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LCM
Least common multiple
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Step-by-step (Euclidean algorithm)
Prime factorization
Division method
Divisors & common divisors
About GCD & LCM
What is the GCD?
What is the LCM?
Key formula
Where it is used
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