Convert Mechanical Horsepower to Watt
Live bidirectional calculator for Mechanical Horsepower (hp) and Watts (W) with verified formula and conversion charts.
Power7 units
How the Calculation Works (Linear Scaling)
Since 1 Mechanical Horsepower = 745.699872 Watts, multiply the value in Mechanical Horsepower by 745.699872.
Mechanical Horsepower to Watt Conversion Table
Precomputed values for quick reference and printing.
| Mechanical Horsepower | Watt |
|---|---|
| 1 hp | 745.6999 W |
| 2 hp | 1491.3997 W |
| 3 hp | 2237.0996 W |
| 4 hp | 2982.7995 W |
| 5 hp | 3728.4994 W |
| 6 hp | 4474.1992 W |
| 7 hp | 5219.8991 W |
| 8 hp | 5965.599 W |
| 9 hp | 6711.2988 W |
| 10 hp | 7456.9987 W |
| 15 hp | 11185.4981 W |
| 20 hp | 14913.9974 W |
| 25 hp | 18642.4968 W |
| 30 hp | 22370.9961 W |
| 40 hp | 29827.9949 W |
| 50 hp | 37284.9936 W |
| 75 hp | 55927.4904 W |
| 100 hp | 74569.9872 W |
| Watt | Mechanical Horsepower |
|---|---|
| 1 W | 0.0013 hp |
| 2 W | 0.0027 hp |
| 3 W | 0.004 hp |
| 4 W | 0.0054 hp |
| 5 W | 0.0067 hp |
| 6 W | 0.008 hp |
| 7 W | 0.0094 hp |
| 8 W | 0.0107 hp |
| 9 W | 0.0121 hp |
| 10 W | 0.0134 hp |
| 15 W | 0.0201 hp |
| 20 W | 0.0268 hp |
| 25 W | 0.0335 hp |
| 30 W | 0.0402 hp |
| 40 W | 0.0536 hp |
| 50 W | 0.0671 hp |
| 75 W | 0.1006 hp |
| 100 W | 0.1341 hp |
๐ Standard Benchmark Reference Values
Imperial mechanical power rating (550 ftยทlbf/s).
ApproximateAbout Mechanical Horsepower (hp)
The imperial mechanical horsepower, defined as 550 foot-pounds force per second (โ 745.69987 W).
History: Devised by James Watt to compare steam engine power output with draft horses.
Common Uses: Internal combustion car engines, boat outboards, lawn mowers in the US and UK.
About Watt (W)
The SI coherent derived unit of power, equal to one joule of energy converted or dissipated per second (1 J/s).
History: Named after Scottish engineer James Watt for his improvements to the steam engine; adopted in 1889.
Common Uses: Light bulb power, consumer electronics, computer power supplies, solar panels.
โ Frequently Asked Questions
How many Watts are in 1 Mechanical Horsepower?
There are exactly 745.699872 Watts in 1 Mechanical Horsepower (1 hp = 745.699872 W).
What is the formula to convert Mechanical Horsepower to Watt?
The formula is: Watt = Mechanical Horsepower ร 745.699872. Since 1 Mechanical Horsepower = 745.699872 Watts, multiply the value in Mechanical Horsepower by 745.699872.
How do I convert 1 hp to W manually?
To convert 1 hp to W: apply the formula Watt = Mechanical Horsepower ร 745.699872. Substituting gives: 1 ร 745.699872 = 745.6999 W.