Convert Watts to Mechanical Horsepower
Convert watts to mechanical horsepower instantly. Type a value below, check the formula and table, then see how the same W to hp(I) conversion looks as a single line in Notes Calculator.
In Notes Calculator, type 100 W to hp and the answer appears as you type.
Watts to Mechanical Horsepower formula
One watt is 0.00134102 mechanical horsepower, so hp(I) = W × 0.00134102. For the reverse, multiply mechanical horsepower by 745.7, or use the Mechanical Horsepower to Watts converter.
Watts to Mechanical Horsepower conversion table
| Watts (W) | Mechanical Horsepower (hp(I)) |
|---|---|
| 1 | 0.00134102 |
| 2 | 0.00268204 |
| 5 | 0.00670511 |
| 10 | 0.0134102 |
| 20 | 0.0268204 |
| 25 | 0.0335256 |
| 50 | 0.0670511 |
| 100 | 0.134102 |
| 250 | 0.335256 |
| 500 | 0.670511 |
| 1,000 | 1.34102 |
Watts to Mechanical 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 mechanical horsepower without a separate converter.
| Note | Result |
|---|---|
| 100 W to hp | 0.13 hp |
| 100 W in hp | 0.13 hp |
| 10 hp as W | 7,457 W |
See the unit conversion docs for mixing units in one expression, or open the free web app and try it.
Notes Calculator is a notepad calculator for the web and a calculator app for Mac, Windows, Linux, iOS and Android.
FAQ
Frequently asked questions
- One watt equals 0.00134102 mechanical horsepower. To convert watts to mechanical horsepower, multiply by 0.00134102; to go back, multiply by 745.7.
- 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, Android, and iOS with the same unit conversions built in.
How many mechanical horsepower are in one watt?
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