Convert Horsepower to Kilowatts
No popups. No autoplay ads. Accurate answers with formulas shown.
Engineering
Real-World Reference Values
| Value | Kilowatts | |
|---|---|---|
| 1 hp | 0.746 kW | Basic reference (1 hp) |
| 5 hp | 3.728 kW | Workshop air compressor or table saw motor |
| 150 hp | 111.9 kW | Average US passenger car |
| 300 hp | 223.7 kW | V6 or turbocharged four-cylinder engine |
| 500 hp | 372.8 kW | High-performance sports car |
Common Uses
- Converting US motor specifications for purchase in metric countries
- Calculating electrical load from a motor rated in hp for panel sizing
- Translating vehicle horsepower for international comparison
Practical Tips
Quick Conversions
| Unit Name | Symbol | Per 1 Horsepower |
|---|---|---|
| BTU per Hour | BTU/h | 2544.43 |
| Foot-pound per Second | ft·lbf/s | 550 |
| Gigawatt | GW | 7.457 × 10⁻⁷ |
| Horsepower | hp | 1 |
| Kilocalorie per Hour | kcal/h | 641.186 |
| Kilowatt | kW | 0.7457 |
| Megawatt | MW | 0.0007457 |
| Metric Horsepower | PS | 1.01387 |
| Milliwatt | mW | 745700 |
| Watt | W | 745.7 |
Frequently Asked Questions
How do I convert Horsepower to Kilowatts?
To convert Horsepower to Kilowatts, use the conversion where 1 Horsepower (hp) = 0.7457 Kilowatts (kW). For example, 1 Horsepower = 0.7457 Kilowatts.
What are common Horsepower to Kilowatt conversions?
Here are common conversions: 1 Horsepower = 0.7457 Kilowatts, 5 Horsepower = 3.7285 Kilowatts, 10 Horsepower = 7.457 Kilowatts, 25 Horsepower = 18.6425 Kilowatts, 50 Horsepower = 37.285 Kilowatts, 100 Horsepower = 74.57 Kilowatts.
When would I need to convert Horsepower to Kilowatts?
Converting US motor specifications for purchase in metric countries. Calculating electrical load from a motor rated in hp for panel sizing. Translating vehicle horsepower for international comparison.
How precise are the conversions?
All conversions use exact factors verified against NIST and ISO standards with up to 10 significant figures of precision. Results are calculated using IEEE 754 double-precision arithmetic, which provides approximately 15-17 significant digits. For temperature and other non-linear conversions, exact formulas are used rather than approximations.
How many Kilowatts is 1 Horsepower? (Basic reference (1 hp))
1 Horsepower equals 0.746 kW Kilowatts. This is a frequently referenced value because it represents basic reference (1 hp).