Watts to Horsepower Converter
Convert watts (W) to horsepower (hp) instantly. Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
Result
- Horsepower
- 0.001341 hp
How to use the watts to horsepower converter
- Enter the watts (W).
- The results update as you type, or press Calculate.
- Read the horsepower first, then the supporting figures below it.
Formula
Horsepower = watts × 0.0013410221
Worked example
For example, with these inputs:
- Watts (W): 1
the calculator returns:
- Horsepower: 0.001341 hp
Watts to Horsepower table
| Watts | Horsepower |
|---|---|
| 1 W | 0.001341 hp |
| 2 W | 0.002682 hp |
| 5 W | 0.006705 hp |
| 10 W | 0.01341 hp |
| 20 W | 0.02682 hp |
| 25 W | 0.033526 hp |
| 50 W | 0.067051 hp |
| 100 W | 0.134102 hp |
| 250 W | 0.335256 hp |
| 500 W | 0.670511 hp |
| 1,000 W | 1.341 hp |
About this conversion
Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Frequently asked questions
How many horsepower are in one watt?
1 W = 0.001341 hp.
How do I convert W to hp?
Horsepower = watts × 0.0013410221.