Boltzmann constant is the constant of the ratio of gas to Avogadro’s number equivalent to the numerical value of 1.381×10 ^-23 joules per kelvin as in the case of where the molecules in existence are equivalent to Avogadro’s number. Boltzmann constant has significance in many branches namely, Planck’s constant, Clausius thermodynamics and is also an interconnected link between microscopic and macroscopic branches of physics.