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We have implemented a practical approach to calculate the ionization balances and electrical conductivities in warm dense metal plasmas. The corrected form of ionization potential for nonideal plasma has been derived with the Coulomb coupling effect taken into account utilizing the excess free energy models currently available. The ionization balances in metal plasmas are computed in the parameter range of temperature of 10 000-30 000 K and density up to 10 g/cm3 and the results are shown to effectively demonstrate the pressure-induced ionization near solid densities. The electrical conductivities of partially ionized metal plasmas are then evaluated based on a linear mixture rule that takes account of both the electron-ion and electron-neutral collisions. The calculated conductivity values appear in reasonable agreement with measured data from recent wire-explosion experiments accounting for the metal-insulator transition