Steam table calculator Excel add-in based on IAPWS-97 standard which calculates 23 different properties such as: Temperature, Pressure, Enthalpy, Entropy, Quality, Density, Internal Energy, Isobaric Heat Capacity, Isochoric Heat Capacity, Specific volume, Speed of Sound, Thermal Conductivity, Viscosity, Surface Tension, Helmholtz Free Energy, Gibbs Free Energy, Compressibility Factor, Isothermal Compressibility, Joule-Thompson Coefficient, Isothermal Joule-Thompson, Thermal Expansion Coefficient, Prandtl Number, Static Dielectric Constant.