🔌 Horsepower (mechanical) to Kilowatt Converter
Convert horsepower (HP) to kilowatts (kW). 1 HP ≈ 0.7457 kW. Standard for engine power conversions.
0.7457
1 hp=0.7457 kW
Quick Reference: Horsepower (mechanical) → Kilowatt
| hp | kW |
|---|---|
| 0.5 | 0.37285 |
| 1 | 0.7457 |
| 2 | 1.4914 |
| 3 | 2.2371 |
| 5 | 3.7285 |
| 10 | 7.457 |
| 25 | 18.6425 |
| 50 | 37.285 |
| 100 | 74.57 |
About this conversion
Convert horsepower to kilowatts when registering a US or Japanese car in Europe, or when comparing classic engine specs to modern EV ratings.
Formula
kW = hp × 0.7457 (mechanical). For metric horsepower (PS): kW = PS × 0.7355.
Worked example
300 hp Mustang = 300 × 0.7457 ≈ 223.7 kW.
Common use cases
- European car registration paperwork
- Insurance documents based on engine power in kW
- Comparing legacy and modern motor specs
Frequently Asked Questions
How many kW in 200 hp?+
Approximately 149.1 kW.
Why does my car certificate say PS not hp?+
EU paperwork traditionally uses metric horsepower (PS), 1 PS = 0.7355 kW.
Is 1 hp = 0.75 kW close enough?+
For rough estimates yes, but 0.7457 is the exact mechanical conversion factor.