🔗 GCD/LCM Calculators

Calculate GCD, LCM, use the Euclidean algorithm, and check coprimality.

All GCD/LCM Tools

GCD Calculator Find the Greatest Common Divisor (GCD) of two numbers. LCM Calculator Find the Least Common Multiple (LCM) of two numbers. Euclidean Algorithm Calculator Step-by-step Euclidean algorithm to find GCD with full working shown. Coprime Checker Check whether two numbers are coprime (GCD = 1). GCD of Three Numbers Find the Greatest Common Divisor of three numbers at once.