What is Dimensional Formula of Planck’s Constant?

The Planck’s constant (h) can be defined as a proportionality constant that relates the energy (E) of a photon to the frequency (ν) of its associated electromagnetic wave.

Mathematically,
Planck’s Constant (h) = Energy(E) / frequency (ν).

Dimensional Formula of energy = M¹L²T^-2.
Dimensional Formula of frequency = M⁰L⁰T^-1.

Putting these values in above equation we get,
Dimensional Formula of Planck’s constant = M¹L²T^-1.
SI unit of Planck’s constant is joule-seconds (j-s).