Convert Picowatts to Mechanical Horsepower
Convert Picowatts (pW) to Mechanical Horsepower (hp) instantly and accurately.
Conversion Formula
hp = pW × 1.341022090e-15
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.
About Mechanical Horsepower
The mechanical horsepower (hp) is exactly 550 ft·lbf/s ≈ 745.7 W - defined by James Watt by timing mine horses to set a comparable steam engine rating. A typical compact car produces 100-150 hp (75-112 kW); a sports car 300-600 hp; an F1 car ~1,000 hp (745 kW). SAE net horsepower is measured at the flywheel with all accessories fitted. Marine diesel engines, aircraft piston engines, and lawn equipment are still rated in hp. 1 hp = 550 ft·lbf/s = 745.6998715822704 W.
Quick Reference Table
| Picowatts (pW) | Mechanical Horsepower (hp) |
|---|---|
| 1 pW | 1.341 × 10-15 hp |
| 2 pW | 2.682 × 10-15 hp |
| 5 pW | 6.705 × 10-15 hp |
| 10 pW | 1.341 × 10-14 hp |
| 25 pW | 3.353 × 10-14 hp |
| 50 pW | 6.705 × 10-14 hp |
| 100 pW | 1.341 × 10-13 hp |