Convert Watts to Horsepower
Convert watts to horsepower instantly. Type a value below, check the formula and table, then see how the same W to hp conversion looks as a single line in Notes Calculator.
Watts to Horsepower formula
One watt is 0.00135962 horsepower, so hp = W × 0.00135962. For the reverse, multiply horsepower by 735.499, or use the Horsepower to Watts converter.
Watts to Horsepower conversion table
| Watts (W) | Horsepower (hp) |
|---|---|
| 1 | 0.00135962 |
| 2 | 0.00271924 |
| 5 | 0.00679811 |
| 10 | 0.0135962 |
| 20 | 0.0271924 |
| 25 | 0.0339905 |
| 50 | 0.0679811 |
| 100 | 0.135962 |
| 250 | 0.339905 |
| 500 | 0.679811 |
| 1,000 | 1.35962 |
Watts to Horsepower in Notes Calculator
Notes Calculator is a notepad that does math. Write 100 W to hp on any line and the answer appears beside it. Change the number and the result follows. The same works with in and as, and with values stored in variables, so a whole estimate can mix watts and horsepower without a separate converter.
| Note | Result |
|---|---|
| 100 W to hp | 0.14 hp |
| 100 W in hp | 0.14 hp |
| 10 hp as W | 7,354.99 W |
See the unit conversion docs for mixing units in one expression, or open the free web app and try it.
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FAQ
Frequently asked questions
- One watt equals 0.00135962 horsepower. To convert watts to horsepower, multiply by 0.00135962; to go back, multiply by 735.499.
- Type the value, the unit, and the target unit on one line: 100 W to hp. The keywords to, in, and as all work, and the result updates as you type. You can also keep the value in a variable and convert it later.
- Yes. The converter on this page is free, and Notes Calculator has a free plan for the web, Mac, Windows, Linux, and Android with the same unit conversions built in.
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