Convert Mechanical Horsepower to Exawatts
Convert Mechanical Horsepower (hp) to Exawatts (EW) instantly and accurately.
Conversion Formula
EW = hp × 7.456998716e-16
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 Exawatts
An exawatt (EW) is 10¹⁸ W. The Sun's total luminosity is 3.828 × 10²⁶ W = 3.828 × 10⁸ EW. Earth intercepts ~0.174 EW of solar power. Gamma-ray burst peak luminosities reach 10⁶-10¹ EW, making them the most powerful transients in the universe. Soft gamma-repeater (magnetar) giant flares briefly reach ~10⁵ EW. Proposed multi-exawatt laser projects (IZEST initiative) aim to compress kilojoules into attosecond pulses for QED vacuum physics. Global human civilisation consumes ~1.8 × 10⁻² EW (18 TW). 1 EW = 10¹⁸ W.
Quick Reference Table
| Mechanical Horsepower (hp) | Exawatts (EW) |
|---|---|
| 1 hp | 7.457 × 10-16 EW |
| 2 hp | 1.491 × 10-15 EW |
| 5 hp | 3.728 × 10-15 EW |
| 10 hp | 7.457 × 10-15 EW |
| 25 hp | 1.864 × 10-14 EW |
| 50 hp | 3.728 × 10-14 EW |
| 100 hp | 7.457 × 10-14 EW |