Irvine, Feb 14, 2014. Pacific Power's popular power calculator App, which had been available for iOS only before, has now been released for use on Android devices. Power Calculator is a simple tool designed to help customers determine the right size power source for their test requirement. The application calculates the current, voltage, resistance, and power demanded by a given load. Both single-phase and three-phase calculators are provided, as well as graphic representations of the formulas used to calculate the results.