Convert Watt to Horsepower
Use this free converter to change watts (W) into horsepower (hp). Watt and horsepower both measure power. As a quick reference, 1 W equals 0.0013410221 hp, and 1 hp equals 745.69987 W.
Free · runs in your browser · no sign-up
Horsepower (hp)
0.0013410221
1 W = 0.0013410221 hp
Power conversion table
| Watt | Horsepower |
|---|---|
| 0.01 | 0.000013410221 |
| 0.1 | 0.00013410221 |
| 0.5 | 0.00067051104 |
| 1 | 0.0013410221 |
| 2 | 0.0026820442 |
| 3 | 0.0040230663 |
| 5 | 0.0067051104 |
| 10 | 0.013410221 |
| 20 | 0.026820442 |
| 25 | 0.033525552 |
| 50 | 0.067051104 |
| 100 | 0.13410221 |
| 1,000 | 1.3410221 |
How to convert Watt to Horsepower
Multiply the watt value by 0.0013410221 to get horsepower.
- Enter the number of watts you want to convert.
- The converter instantly shows the equivalent value in horsepower.
- Worked example: 15 W × 0.0013410221 = 0.020115331 hp.
- Use the swap button to reverse the conversion (horsepower to watt).
About these units
Watt (W)
- Definition
- The watt (W) is the SI unit of power, equal to one joule of energy per second.
- History
- Named after James Watt, the improver of the steam engine.
- Current use
- Watts rate the power of light bulbs, appliances, and electronics everywhere.
Horsepower (hp)
- Definition
- Horsepower (hp) is a unit of power equal to about 745.7 watts in its mechanical definition.
- History
- Defined by James Watt to compare steam engines with the work of draft horses.
- Current use
- Horsepower rates car, motorcycle, and machinery engines, especially in the US.
Frequently asked questions
How many horsepower are in a watt?
There are 0.0013410221 hp in 1 W. To convert, multiply the number of watts by 0.0013410221.
How do I convert watts to horsepower?
Multiply the watt value by 0.0013410221 to get horsepower. For example, 10 W = 0.013410221 hp.
Is this watt-to-horsepower converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Watt to other power units
| Unit | 1 Watt equals |
|---|---|
| Kilowatt (kW) | 0.001 kW |
| Megawatt (MW) | 0.000001 MW |
| Horsepower (hp) | 0.0013410221 hp |
| Metric Horsepower (PS) | 0.0013596216 PS |
| BTU per Hour (BTU/h) | 3.4121416 BTU/h |