It is different from specific heat capacity in that the VHC depends on the volume of the material, while the specific heat is based on the mass of the material. If given a specific heat value of a substance, one can convert it to the VHC by multiplyinging the specific heat by the density of the substance.
The volumetric heat capacity is defined has having SI units of J/m³/K or Imperial units of BTU/ft³/°F.
See also: temperature (heat capacity), heat capacity