Convert Electrical Horsepower to Kilowatts
Convert Electrical Horsepower (hp(E)) to Kilowatts (kW) instantly and accurately.
Conversion Formula
kW = hp(E) × 0.746
About Electrical Horsepower
The electrical horsepower (hp(E)) is defined as exactly 746 W - the US NEMA rounding used on electric motor nameplates. It differs from mechanical hp (745.7 W) by only 0.04%. Every NEMA-rated motor in the US carries a horsepower nameplate: a '5 hp motor' delivers 5 × 746 = 3,730 W. NEC motor branch-circuit sizing tables, overload relay selection, and starter ratings are all based on hp(E). Despite global kW adoption, US industrial motor infrastructure remains standardised in electrical horsepower. 1 hp(E) = 746 W.
About Kilowatts
A kilowatt (kW) is 1,000 W - the everyday unit for home, vehicle, and industrial power. Average US home consumption is ~1.2 kW continuous (~10,500 kWh/year). EV motors range from 30 kW (city cars) to 600+ kW (performance models); a Tesla Model S Performance produces 560 kW (751 hp). Industrial gas turbines on commercial aircraft generate 20,000-100,000 kW. Solar installations are sized in kW-peak. Industrial electric motors span from fractional kW to thousands of kW. 1 kW = 1,000 W = 1.341 hp = 3,412.1 BTU/h.
Quick Reference Table
| Electrical Horsepower (hp(E)) | Kilowatts (kW) |
|---|---|
| 1 hp(E) | 0.746 kW |
| 2 hp(E) | 1.492 kW |
| 5 hp(E) | 3.73 kW |
| 10 hp(E) | 7.46 kW |
| 25 hp(E) | 18.65 kW |
| 50 hp(E) | 37.3 kW |
| 100 hp(E) | 74.6 kW |