How to convert Horsepower to watts
To convert Horsepower to watts, multiply the value by the conversion factor 745.6998716. To go the other way, multiply by 0.0013410221 (or divide by 745.6998716).
Worked example: 25 hp to W
- Write the value: 25 hp
- Multiply by 745.6998716: 25 × 745.6998716
- Result: 18,642.5 W
Horsepower to Watt conversion table
Quick reference values, rounded to 6 significant digits.
| Horsepower (hp) | Watt (W) |
|---|---|
| 0.1 hp | 74.57 W |
| 0.25 hp | 186.425 W |
| 0.5 hp | 372.85 W |
| 1 hp | 745.7 W |
| 2 hp | 1,491.4 W |
| 3 hp | 2,237.1 W |
| 4 hp | 2,982.8 W |
| 5 hp | 3,728.5 W |
| 6 hp | 4,474.2 W |
| 7 hp | 5,219.9 W |
| 8 hp | 5,965.6 W |
| 9 hp | 6,711.3 W |
| 10 hp | 7,457 W |
| 12 hp | 8,948.4 W |
| 15 hp | 11,185.5 W |
| 20 hp | 14,914 W |
| 25 hp | 18,642.5 W |
| 30 hp | 22,371 W |
| 40 hp | 29,827.99 W |
| 50 hp | 37,284.99 W |
| 75 hp | 55,927.49 W |
| 100 hp | 74,569.99 W |
| 250 hp | 186,425 W |
| 500 hp | 372,850 W |
| 1,000 hp | 745,700 W |
Watt to Horsepower
| W | hp |
|---|---|
| 1 W | 0.00134102 hp |
| 5 W | 0.00670511 hp |
| 10 W | 0.0134102 hp |
| 50 W | 0.0670511 hp |
| 100 W | 0.134102 hp |
1 Horsepower in other power units
About Horsepower and Watt
What is a horsepower (hp)?
Mechanical horsepower is about 745.7 watts, used for engines and water pumps.
What is a watt (W)?
The watt is the SI unit of power, one joule per second.
Air-conditioner tip: a 1-ton AC provides 12,000 BTU/h of cooling. A rough rule for Bangladesh is 1 ton per 100–120 sq ft of room area, more for top floors and west-facing rooms.
Where horsepower to watt conversion is used
Power conversions are needed for choosing air conditioners, generators, IPS/UPS, motors and solar panels. Converting between Horsepower and watts is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Power Converter.
Frequently asked questions
How many watts are in 1 horsepower?
1 Horsepower equals 745.7 W.
How do I convert Horsepower to watts?
Multiply the number of Horsepower by 745.6998716. For example, 25 hp × 745.6998716 = 18,642.5 W.
What is 25 hp in W?
25 hp = 18,642.5 W.
How many Horsepower are in 1 watt?
1 Watt equals 0.00134102 hp. Use the Watts to HP converter for the reverse direction.
Is this Horsepower to Watt converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.