Btu/ft3KJ/m3cal/cm3CHU/ft3
Btu/ft3 1 37.258946 0.008899 0.55555556
KJ/m3 0.0268392 1 0.000238846 0.01491066
cal/cm3 112.37033 4186.8 1 62.42796
CHU/ft3 1.7999999 67.066103 0.016184635 1