The SI unit for specific heat capacity is

The S.I unit of specific heat capacity 

$\text{ We know the expression for }\mathrm{S}=\frac{\mathrm{Q}}{\mathrm{m\Delta t}}=\frac{\text{ joule }}{\mathrm{kgK}}$

$\text{ S.I unit of specific heat capacity }\Rightarrow \mathrm{J}{\mathrm{Kg}}^{-1}{\mathrm{K}}^{-1}$