Horsepower (mechanical) to Watt Converter
1 horsepower is exactly 745.69987158227022 watts. Convert horsepower (hp) to watts (W) below: type a value and the result updates as you type.
hp to W calculator
Result
Horsepower (mechanical) to Watt conversion
1 hp = 745.69987158227022 Wone horsepower in watts
1 W ≈ 0.00134102209 hpone watt in horsepower
Horsepower (mechanical) (hp): Exactly 550 foot-pounds-force per second (about 745.69987 watts).
Watt (W): SI derived unit: one joule per second.
Source:Horsepower (mechanical): NIST Special Publication 811 (2008), Appendix B.8; Watt: SI Brochure, 9th edition (BIPM, 2019)
How to convert horsepower to watts
To convert horsepower to watts, multiply the number of horsepower by 745.69987158227022.
Formula
W = hp × 745.69987158227022
Examples
- 5 hp = 5 × 745.69987158227022 = 3728.4993579113511 W
- 25 hp = 25 × 745.69987158227022 = 18642.4967895567555 W
- 100 hp = 100 × 745.69987158227022 = 74569.987158227022 W
Horsepower (mechanical) to Watt conversion table
| Horsepower (mechanical) (hp) | Watt (W) |
|---|---|
| 0.1 hp | 74.569987158227022 W |
| 0.5 hp | 372.84993579113511 W |
| 1 hp | 745.69987158227022 W |
| 2 hp | 1491.39974316454044 W |
| 3 hp | 2237.09961474681066 W |
| 5 hp | 3728.4993579113511 W |
| 10 hp | 7456.9987158227022 W |
| 20 hp | 14913.9974316454044 W |
| 25 hp | 18642.4967895567555 W |
| 50 hp | 37284.993579113511 W |
| 100 hp | 74569.987158227022 W |
| 250 hp | 186424.967895567555 W |
| 500 hp | 372849.93579113511 W |
| 1000 hp | 745699.87158227022 W |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many watts are in one horsepower?
- One horsepower is exactly 745.69987158227022 watts.
- How do I convert watts to horsepower?
- To convert watts to horsepower, multiply the number of watts by about 0.00134102209. The formula is hp = W × 0.00134102209.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 745.69987158227022 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a horsepower or a watt?
- A horsepower is 745.69987158227022 times larger than a watt. In other words, a watt is about 0.00134102209 of a horsepower.