Basic SI units are kilogram (kg), meter (m), and second (s). Many derived units exist (table A.1). The book uses kPa, kJ, kW instead of the ``normal'' units Pa, J, W. Conversions may be needed (table A.1)
Definitions (table A.1): 1 bar = Pa. 1 atm = 101,325 Pa.
Absolute temperature (required in most formulae and some tables): add 273.15 to convert Centrigrade into Kelvin, substract 273.15 to convert Kelvin into centrigrade. However, temperature differences are the same in Kelvin as in Centrigrade; the two temperatures in the difference do not need to be converted.