watts to hp Converter
1 W = 0.001341 hp. Enter a value. The result updates immediately.
Convert
Accuracy and rounding
Useful for motors, appliances, engines, and electrical specifications.
Power units compare rates of work or energy transfer. They do not describe total energy used over time.
For appliance or motor comparisons, one or two decimals is usually enough. For sizing equipment, follow the spec tolerance.
How to convert watts to hp
- Enter the value in watts.
- Select watts as the source unit.
- Select hp as the target unit.
- Read or copy the result.
watts to hp chart
| watts | hp |
|---|---|
| 1 W | 0.001341 hp |
| 5 W | 0.006705 hp |
| 10 W | 0.01341 hp |
| 50 W | 0.06705 hp |
| 100 W | 0.1341 hp |
| 746 W | 1.0004 hp |
Formula
hp = W x 0.00134102209
Example: 1 W = 0.001341 hp.
Source
Power units derived from the watt; mechanical horsepower is 745.699871582 W and BTU/h uses the International Table BTU.
Common questions
How do I convert watts to hp?
Enter the watts value in the converter, or multiply by the factor shown in the formula. 1 W = 0.001341 hp.
What should I watch out for?
Power conversions compare rates of work or energy transfer, not total energy used over time.
Where does this power conversion come from?
Power units derived from the watt; mechanical horsepower is 745.699871582 W and BTU/h uses the International Table BTU. ConverterBase uses stable definitions and fixed conversion factors, not live or rounded market data.