Generator Calculators

Generator calculators for home and appliances: running and starting watts, kVA size, AC and water pump loads, and fuel use, with each step shown.

• Generator Size for Well Pump

  Find the generator size for a 0.5 to 5 HP well or water pump. Converts HP to watts, adds motor starting surge and gives kVA at PF 0.8.

• Generator Size for 1.5 Ton AC

  What kVA generator runs a 1.5 ton inverter or non-inverter AC? Running and starting watts, kVA at PF 0.8, and home load examples.