Portable Generator Sizing Calculator
Find the right size portable generator for home backup or job sites.
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Circuit Details
A
V
Calculated Power
--
kW
Apparent Power
-- kVA
Calculation
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How to Convert Amps to Kilowatts
The conversion depends on your electrical system type (DC vs AC) and the Power Factor (efficiency) of the load.
DC Circuits
Batteries, Solar, Automotive
kW = (I × V) / 1000
AC Single-Phase
Household Outlets (120V/240V)
kW = (I × V × PF) / 1000
AC Three-Phase
Industrial / Commercial
kW = (I × V × PF × √3) / 1000
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