1 MJ/kg, = 238.8 kcal/kg. 1 MJ/kg, = 430 Btu/lb. 1 MJ/m3, = 26.84 Btu/ft3. 1 cal/g, = 4.187 kj/kg. 1 kcal/kg, = 1.8 Btu/lb. 1 Btu/ft3, = 37.26 kJ/m3.
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