Convert Metric Horsepower to Electrical Horsepower
Convert Metric Horsepower (PS) to Electrical Horsepower (hp(E)) instantly and accurately.
Conversion Formula
hp(E) = PS × 0.9859232574
About Metric Horsepower
The metric horsepower (PS/CV/pk) equals exactly 75 kgf·m/s = 735.49875 W - the European equivalent of mechanical horsepower, defined as lifting 75 kg by 1 m/s. It was the DIN 66036 standard for European automotive ratings until the EU mandated kW. A 100 PS car produces 73.55 kW; 200 PS = 147.1 kW. The ~1.4% difference from mechanical hp (745.7 W) means a 100 PS car rates as 98.6 mechanical hp. German car advertising still shows PS parenthetically alongside kW. 1 PS = 735.49875 W.
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.
Quick Reference Table
| Metric Horsepower (PS) | Electrical Horsepower (hp(E)) |
|---|---|
| 1 PS | 0.985923 hp(E) |
| 2 PS | 1.97185 hp(E) |
| 5 PS | 4.92962 hp(E) |
| 10 PS | 9.85923 hp(E) |
| 25 PS | 24.6481 hp(E) |
| 50 PS | 49.2962 hp(E) |
| 100 PS | 98.5923 hp(E) |