watt to mechanical horsepower
Convert watt (W) to mechanical horsepower (hp). Use an editable power converter, conversion formula, and reference table.
1 W = 0.00134102209 hp
Conversion formula
One watt equals 0.00134102209 mechanical horsepower. Multiply your value in watt by this factor to get mechanical horsepower. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 watt:5 × 0.00134102209 = 0.006705110448 hp
Conversion table
| watt (W) | mechanical horsepower (hp) |
|---|---|
| 0.01 | 0.0000134102209 |
| 0.1 | 0.000134102209 |
| 1 | 0.00134102209 |
| 2 | 0.002682044179 |
| 5 | 0.006705110448 |
| 10 | 0.0134102209 |
| 25 | 0.03352555224 |
| 50 | 0.06705110448 |
| 100 | 0.134102209 |
| 1000 | 1.34102209 |
About these measurements
Power is the rate of energy transfer.
The base reference used here is the watt. One watt is 1 base units; one mechanical horsepower is 745.6998716 base units.
Important distinctions
Mechanical horsepower and metric horsepower are distinct units.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert W to hp?
Multiply the quantity in W by 0.00134102209. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the mechanical horsepower to watt converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
