Generator Size Calculator
Estimate generator kW kVA amps horsepower and wattage with power factor and voltage inputs.
Estimate generator size from running watts and starting surge, or convert kW, kVA, amps, and horsepower.
About this tool
Generator Size Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
Category: Trade & Construction Calculators. Browse more Trade & Construction Calculators tools.