Watts to HP Converter
Converts appliance, motor and generator ratings in watts into mechanical horsepower.
1 W = 0.001341 hp
mechanical horsepower
1 W = 0.001341 hp
How to convert watts to mechanical horsepower
Multiply the number of watts by 0.0013410221.
Formula
hp = W × 0.0013410221
The factor is rounded; the converter uses the full-precision value.
Examples
- 500 W × 0.0013410221 = 0.6705 hp
- 1,500 W × 0.0013410221 = 2.0115 hp
- 10,000 W × 0.0013410221 = 13.4102 hp
Watts to mechanical horsepower conversion table
| Watts (W) | Mechanical horsepower (hp) |
|---|---|
| 100 | 0.1341 |
| 250 | 0.3353 |
| 500 | 0.6705 |
| 746 | 1.0004 |
| 750 | 1.0058 |
| 1,000 | 1.341 |
| 1,500 | 2.0115 |
| 2,000 | 2.682 |
| 3,000 | 4.0231 |
| 5,000 | 6.7051 |
| 7,500 | 10.0577 |
| 10,000 | 13.4102 |
| 50,000 | 67.0511 |
| 100,000 | 134.1022 |
Values rounded to 4 decimal places or 4 significant digits.
About watts
The watt is the SI unit of power: one joule per second. Light bulbs, appliances and chargers are rated in watts.
About mechanical horsepower
Mechanical horsepower, also called imperial horsepower, is defined as 550 foot-pounds-force per second, about 745.7 watts. US and UK car engine ratings in "hp" or "bhp" use this definition.
Frequently asked questions
How many mechanical horsepower are in one watt?
One watt equals 0.001341 mechanical horsepower (rounded).
How do I convert watts to mechanical horsepower?
Multiply the number of watts by 0.0013410221. For example: 1,500 W × 0.0013410221 = 2.0115 hp.
How many watts are in one mechanical horsepower?
One mechanical horsepower equals 745.6999 watts.
Is the W to hp conversion exact?
The factor between these units has more decimals than are useful to show, so it is rounded on this page. The converter itself always calculates with the full-precision value.