Convert Mechanical Horsepower to Petawatts
Convert Mechanical Horsepower (hp) to Petawatts (PW) instantly and accurately.
Conversion Formula
PW = hp × 7.456998716e-13
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.
About Petawatts
A petawatt (PW) is 10¹⁵ W. Total solar power intercepted by Earth is ~174 PW. The world's most powerful laser pulses operate at petawatt peak power via chirped pulse amplification (CPA, 2018 Nobel Prize in Physics): China's SULF demonstrated 10 PW in 2019; ELI-NP targets 10 PW. These PW pulses last femtoseconds and create plasma temperatures of billions of kelvin in laboratory targets. Gamma-ray bursts radiate 10²⁴-10²⁷ W at peak - thousands to billions of times the petawatt scale. 1 PW = 10¹⁵ W.
Quick Reference Table
| Mechanical Horsepower (hp) | Petawatts (PW) |
|---|---|
| 1 hp | 7.457 × 10-13 PW |
| 2 hp | 1.491 × 10-12 PW |
| 5 hp | 3.728 × 10-12 PW |
| 10 hp | 7.457 × 10-12 PW |
| 25 hp | 1.864 × 10-11 PW |
| 50 hp | 3.728 × 10-11 PW |
| 100 hp | 7.457 × 10-11 PW |