Engineering Software has developed a new Windows based software package (Energy Conversion) that quickly, easily and reliably calculates thermodynamic and transport properties of gaseous, liquid and solid species -- (temperature and pressure (270 K to 5000 K), enthalpy and pressure and entropy and pressure) -- contains coefficients for the calculation of physical properties -- the user has the capability to use the coefficients to carry out independent engineering calculations involving physical properties of various species, steam approximations for both saturated and superheated areas, analyzes power cycles (Carnot, Brayton, Rankine, Otto, Diesel, magnetohydrodynamics and fuel cell), power cycle components/processes (ompression, combustion, expansion, heat transfer and mixing) and compressible flow (velocity of sound, Mach number, stagnation and static properties, nozzle, normal shock, diffuser and thrust).