Convert Horsepower to Watts
One horsepower equals 745.6999 watts. Type any value to convert horsepower to watts instantly — with a full reference table below.
Convert Horsepower to Watts
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How to convert Horsepower to Watts
To convert horsepower to watts, multiply by 745.6999. One horsepower equals 745.6999 W, and one watt equals 0.00134102 hp.
- Take the value in horsepower — for example 7.5 hp.
- Multiply by 745.6999 (the number of watts in one horsepower).
- 7.5 × 745.6999 = 5,592.749 W.
Quick mental estimate: Multiply the number of horsepower by 746 (accurate to better than 0.05%).
Horsepower to Watts conversion table
| 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 |
| 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 |
About converting Horsepower to Watts
Horsepower (hp) and Watts (W) are both units of power. The exact factor is 1 hp = 745.6999 W, so multiply by 745.6999 to go from horsepower to watts (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Watts to Horsepower converter, or the full unit converter for every unit at once.
Real-world power in horsepower and watts
| Example | Horsepower | Watts |
|---|---|---|
| An LED bulb ('60 W equivalent') | ≈ 0.0120692 hp | ≈ 9 W |
| A resting human body | ≈ 0.134102 hp | ≈ 100 W |
| A microwave oven | ≈ 1.341022 hp | ≈ 1,000 W |
| A UK electric kettle | ≈ 4.023066 hp | ≈ 3,000 W |
| A 150 hp car engine | 150 hp | 111,855 W |
“≈” marks typical values; the rest are defined or measured figures.
The units
Mechanical horsepower: 550 foot-pounds per second, about 745.7 W.
Used for: Car and motor ratings in the US/UK.
The SI unit of power: one joule per second.
Used for: Appliances, light bulbs and electronics.
This page uses mechanical horsepower (550 foot-pounds per second ≈ 745.7 W). Metric horsepower (PS) is slightly smaller at 735.5 W.