Horsepower (Mechanical / UK) (hp)
Mechanical (imperial) horsepower equals 745.6998715823 watts — James Watt’s comparison to draft horses.
This hp rating appears on US car engines, lawn mowers, and industrial motors unless labeled metric PS.
Convert horsepower (mechanical / uk) to watt instantly. Type in either field — results update live.
Selected hp values converted to W using the exact factor from this tool.
| hp | W |
|---|---|
| 0.01 | 7.4569987158 |
| 0.1 | 74.5699871582 |
| 1 | 745.6998715823 |
| 2 | 1,491.3997431646 |
| 3 | 2,237.0996147469 |
| 5 | 3,728.4993579115 |
| 10 | 7,456.998715823 |
| 20 | 14,913.997431646 |
| 50 | 37,284.993579115 |
| 100 | 74,569.98715823 |
| 1,000 | 745,699.8715823 |
Exact conversion factors in both directions, plus a worked example.
1 hp = 745.6998715823 W
1 W = 0.0013410221 hp
To convert horsepower (mechanical / uk) to watt, multiply by 745.6998715823.
To convert watt to horsepower (mechanical / uk), multiply by 0.0013410221.
Example: convert 10 hp to W
10 × 745.6998715823 = 7456.998715823 W
Short background on the units used in this conversion.
Mechanical (imperial) horsepower equals 745.6998715823 watts — James Watt’s comparison to draft horses.
This hp rating appears on US car engines, lawn mowers, and industrial motors unless labeled metric PS.
The watt is the SI unit of power — one joule of energy transferred per second.
Watts rate light bulbs, appliance nameplates, solar panels, and electrical device consumption.
W = hp × 745.6998715823hp = W × 0.0013410221, using the same exact factors as this converter.Jump to any power conversion starting from horsepower (mechanical / uk) — including the reverse direction and every other unit in our dataset.