Convert Microwatts to Electrical Horsepower
Convert Microwatts (µW) to Electrical Horsepower (hp(E)) instantly and accurately.
Conversion Formula
hp(E) = µW × 1.340482574e-9
About Microwatts
A microwatt (µW) is 10⁻⁶ W - the operational power band for autonomous IoT sensors and energy-harvesting wearables. Quartz oscillators in microcontrollers consume 1-10 µW; thermoelectric wearables harvesting body heat produce 10-100 µW. NFC tags derive ~10-200 µW from the reader field. Cochlear implants and implantable glucose sensors operate at microwatt levels to minimise tissue heating. 1 µW = 10⁻⁶ 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
| Microwatts (µW) | Electrical Horsepower (hp(E)) |
|---|---|
| 1 µW | 1.34 × 10-9 hp(E) |
| 2 µW | 2.681 × 10-9 hp(E) |
| 5 µW | 6.702 × 10-9 hp(E) |
| 10 µW | 1.34 × 10-8 hp(E) |
| 25 µW | 3.351 × 10-8 hp(E) |
| 50 µW | 6.702 × 10-8 hp(E) |
| 100 µW | 1.34 × 10-7 hp(E) |