What is the SI unit of specific heat capacity?

Definition of Specific Heat Capacity: Specific heat capacity of a substance is defined as the heat required by the unit mass of a substance to raise the temperature by $1°C$ or $1K$.

Formula of Specific Heat Capacity: Specific Heat Capacity, $c=\frac{q}{m∆t}$, where $m$ is the mass of substance, $q$ is heat absorbed, and $∆t$ is the change in temperature.

S.I. unit of Specific Heat Capacity:

$$\begin{gathered} Unitofc=\frac{J}{kg\times K} \\ Unitofc=Jk{g}^{-1}{K}^{-1} \end{gathered}$$

Thus, the S.I. unit of specific heat capacity is $Jk{g}^{-1}{K}^{-1}$.