Watt to Horsepower (Mechanical)
1 W = 0.0013410219 hp
How to convert watt to horsepower (mechanical)
Enter the value in watt (W) above and the equivalent in horsepower (mechanical) (hp) updates as you type. This conversion comes up when comparing vacuum cleaners or engines (watts vs horsepower).
- A compact car: about 100 hp, or 75 kW → that is 74570 W in watt.
Typical situations: sizing EV chargers and solar installations (kW); understanding heater labels and fuse loads.
You can also convert in the other direction: Horsepower (Mechanical) to Watt
Watt to Horsepower (Mechanical) conversion table
| Watt (W) | Horsepower (Mechanical) (hp) |
|---|---|
| 1 | 0.001341 |
| 2 | 0.002682 |
| 5 | 0.006705 |
| 10 | 0.01341 |
| 25 | 0.033526 |
| 50 | 0.067051 |
| 100 | 0.134102 |
Watch out for
- Metric hp (PS/CV, 735.5 W) vs mechanical hp (745.7 W): brochures mix them
- kW (power) vs kWh (energy on your bill): a 22 kW charger for 1 hour uses 22 kWh
Frequently asked questions
How many horsepower (mechanical) is 1 watt?
1 watt = 0.001341 horsepower (mechanical).
What is the formula to convert watt to horsepower (mechanical)?
The formula is: hp = W × 0.001341.
What is 10 watts in horsepower (mechanical)?
10 watts = 0.01341 horsepower (mechanical).