Use this free, accurate watt to horsepower (mechanical / imperial) calculator to convert between Watt (W) and Horsepower (Mechanical / Imperial) (hp). Includes live instant results, complete mathematical formulas, conversion tables, and step-by-step examples.
0.0013410221 Horsepower
1 W is equal to 0.001341 hp.
hp = W × 0.00134102
power Converters
To convert from Watt to Horsepower (Mechanical / Imperial), multiply the value in Watt by 0.001341 (or use the formula: hp = W × 0.001341).
Take your initial measurement in Watt (W). For instance, let's convert 1 W.
Multiply by the standard conversion factor (0.001341).
The final converted measurement equals 0.001341 Horsepower (Mechanical / Imperial) (hp).
Compare standard reference values and common conversion benchmarks.
| Watt (W) | Horsepower (Mechanical / Imperial) (hp) | Action |
|---|---|---|
| 1 W | 0.00134 hp | |
| 2 W | 0.00268 hp | |
| 3 W | 0.00402 hp | |
| 5 W | 0.00671 hp | |
| 10 W | 0.01341 hp | |
| 15 W | 0.02012 hp | |
| 20 W | 0.02682 hp | |
| 25 W | 0.03353 hp | |
| 50 W | 0.06705 hp | |
| 75 W | 0.10058 hp | |
| 100 W | 0.1341 hp | |
| 250 W | 0.33526 hp | |
| 500 W | 0.67051 hp | |
| 1000 W | 1.34102 hp |
Official standards, measurement systems, and real-world everyday applications.
A watt is the SI derived unit of power equal to one joule of energy per second (1 J/s).
Common Practical Uses
Mechanical (Imperial) horsepower is a customary power unit equal to approx 745.7 watts (550 ft·lbf/s).
Common Practical Uses
Calculate from Horsepower (Mechanical / Imperial) (hp) back to Watt (W).
Frequently used unit conversions in this category:
Explore other measurement and calculation tools:
There are 0.001341 horsepower in 1 watts. Exactly 1 W is equal to 0.001341 hp.
The conversion formula is: Horsepower (Mechanical / Imperial) = hp = W × 0.00134102. Applying this to 1 W gives: 1 × 0.001341 = 0.001341 hp.
To convert in reverse from horsepower to watts, multiply by the inverse factor: 1 hp = 745.699872 W. Alternatively, divide your Horsepower (Mechanical / Imperial) amount by 0.001341.
For quick estimates, divide the Watt value by 746.
Watt (W) belongs to the Metric (SI) system, commonly used in Light bulbs, Computer power supplies, Solar panel ratings. In comparison, Horsepower (Mechanical / Imperial) (hp) is part of the US customary and Imperial system, frequently applied in Automotive engine specs in North America, Lawn mowers, Outboard boat motors.
Key milestones include: 1 W = 0.001341 hp, 5 W = 0.0067 hp, 10 W = 0.0134 hp, 50 W = 0.0671 hp, and 100 W = 0.1341 hp.