Convert Watts to Horsepower
One watt equals 0.00134102 horsepower. Type any value to convert watts to horsepower instantly — with a full reference table below.
Convert Watts to Horsepower
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How to convert Watts to Horsepower
To convert watts to horsepower, multiply by 0.00134102. One watt equals 0.00134102 hp, and one horsepower equals 745.6999 W.
- Take the value in watts — for example 7.5 W.
- Multiply by 0.00134102 (the number of horsepower in one watt).
- 7.5 × 0.00134102 = 0.0100577 hp.
Quick mental estimate: Divide the number of watts by 746 (accurate to better than 0.05%).
Watts to Horsepower conversion table
| Watts | Horsepower |
|---|---|
| 1 W | 0.00134102 hp |
| 2 W | 0.00268204 hp |
| 5 W | 0.00670511 hp |
| 10 W | 0.0134102 hp |
| 20 W | 0.0268204 hp |
| 50 W | 0.0670511 hp |
| 100 W | 0.134102 hp |
| 200 W | 0.268204 hp |
| 500 W | 0.670511 hp |
| 1,000 W | 1.341022 hp |
| Horsepower | Watts |
|---|---|
| 1 hp | 745.6999 W |
| 2 hp | 1,491.4 W |
| 5 hp | 3,728.499 W |
| 10 hp | 7,456.999 W |
| 20 hp | 14,914 W |
| 50 hp | 37,284.99 W |
| 100 hp | 74,569.99 W |
| 200 hp | 149,140 W |
| 500 hp | 372,849.9 W |
| 1,000 hp | 745,699.9 W |
About converting Watts to Horsepower
Watts (W) and Horsepower (hp) are both units of power. The exact factor is 1 W = 0.00134102 hp, so multiply by 0.00134102 to go from watts to horsepower (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Horsepower to Watts converter, or the full unit converter for every unit at once.
Real-world power in watts and horsepower
| Example | Watts | Horsepower |
|---|---|---|
| An LED bulb ('60 W equivalent') | ≈ 9 W | ≈ 0.0120692 hp |
| A resting human body | ≈ 100 W | ≈ 0.134102 hp |
| A microwave oven | ≈ 1,000 W | ≈ 1.341022 hp |
| A UK electric kettle | ≈ 3,000 W | ≈ 4.023066 hp |
| A 150 hp car engine | 111,855 W | 150 hp |
“≈” marks typical values; the rest are defined or measured figures.
The units
The SI unit of power: one joule per second.
Used for: Appliances, light bulbs and electronics.
Mechanical horsepower: 550 foot-pounds per second, about 745.7 W.
Used for: Car and motor ratings in the US/UK.
This page uses mechanical horsepower (550 foot-pounds per second ≈ 745.7 W). Metric horsepower (PS) is slightly smaller at 735.5 W.