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Amount of heat to be supplied to a given amount of a material to produce a unit change in its temperature:

 C =  \frac{\delta Q}{\delta T} 
SymbolDimensionSI unitsOil metric unitsOil field units

M L2 T−2 Θ−1J/KJ/K

 BTU/°F



Heat Capacity depends on the way the heat is transferred and as such is not a table property of the matter.


The two major heat transfer processes are isobaric and isohoric which define:

Isobaric heat capacity

Isochoric heat capacity


Both  and  are proportional to the amount of the matter involved in a Heat Transfer process and as such are not material properties.


One can relate them to material properties through the known material mass   or a material volume  or material amount of substance :

Specific heat capacityVolumetric Heat CapacityMolar Heat Capacity 
c_m = C/m
c_V = C/V
c_M = C/\nu
C_p= m \cdot c_{mp} = V \cdot c_{vp}
C_V= m \cdot c_{mV} = V \cdot c_{vV}
C_V= m \cdot c_{mV} = V \cdot c_{vV}

Isobaric specific heat capacity

Isochoric specific heat capacity

Isobaric volumetric heat capacity

Isochoric volumetric heat capacity



See also


Physics / Thermodynamics / Thermodynamic process / Heat Transfer

[ Heat ] Isobaric heat capacity ] [ Isochoric heat capacity ]

Specific heat capacity ] Volumetric Heat Capacity ][ Molar Heat Capacity ]