Convert Electrical Horsepower to Picowatts
Convert Electrical Horsepower (hp(E)) to Picowatts (pW) instantly and accurately.
Conversion Formula
pW = hp(E) × 746000000000000
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 Picowatts
A picowatt (pW) is 10⁻¹² W - the power scale of the most sensitive radio receivers. GPS satellites transmit 20-50 W; by the time that signal spans 20,000 km, the received power is ~0.1 pW (−130 dBm). Radio telescopes routinely detect cosmic signals in the picowatt range. Qubit control electronics in quantum computers must resolve energy differences at picowatt scales. Photodetectors in single-photon counting mode, hard drive head read-back signals at idle, and deep-shadow solar cells also operate at picowatt levels. 1 pW = 10⁻¹² W.
Quick Reference Table
| Electrical Horsepower (hp(E)) | Picowatts (pW) |
|---|---|
| 1 hp(E) | 7.46 × 1014 pW |
| 2 hp(E) | 1.492 × 1015 pW |
| 5 hp(E) | 3.73 × 1015 pW |
| 10 hp(E) | 7.46 × 1015 pW |
| 25 hp(E) | 1.865 × 1016 pW |
| 50 hp(E) | 3.73 × 1016 pW |
| 100 hp(E) | 7.46 × 1016 pW |