Watts (W) to Horsepower (hp) Conversion
This is a detailed introduction to Watts to Horsepower conversion and provides a practical power unit conversion tool.
Conversion Formula
Basic Conversion Relationship
- 1 Watt (W) = 0.00134102 hp
- 1 Horsepower (hp) = 745.7 Watts (W)
Detailed Calculation Process
W to hp: hp = W ÷ 745.7 hp to W: W = hp × 745.7
Common Value Reference Table
| Watts (W) | Horsepower (hp) | Application Scenario |
|---|---|---|
| 745.7 W | 1 hp | Small engine |
| 1,491.4 W | 2 hp | Lawn mower |
| 7,457 W | 10 hp | Small boat engine |
| 74,570 W | 100 hp | Car engine |
| 149,140 W | 200 hp | Sports car engine |
Application Examples
Automotive Industry
- Car engines: Typical passenger car engines range from 100-300 hp
- Motorcycle engines: Usually between 10-200 hp depending on size
- Truck engines: Heavy-duty trucks can have 300-600 hp
Industrial Equipment
- Electric motors: Industrial motors commonly rated in hp
- Pumps and compressors: Power ratings often specified in horsepower
- Agricultural machinery: Tractors and harvesters rated by hp output
Marine Applications
- Boat engines: Outboard motors typically rated in hp
- Ship propulsion: Large vessels use thousands of horsepower
- Personal watercraft: Jet skis usually 100-300 hp
Usage Recommendations
- Automotive applications: Use horsepower for traditional engine specifications
- Engineering calculations: Use watts for precise scientific calculations
- Equipment selection: Consider both units when comparing international products
- Energy efficiency: Watts provide better precision for energy consumption analysis