Convert Horsepower to Watts
Convert horsepower to watts instantly. Type a value below, check the formula and table, then see how the same hp to W conversion looks as a single line in Notes Calculator.
Horsepower to Watts formula
One metric horsepower is 735.499 watts, so W = hp × 735.499. For the reverse, multiply watts by 0.00135962, or use the Watts to Horsepower converter.
Horsepower to Watts conversion table
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 | 735.499 |
| 2 | 1,471 |
| 5 | 3,677.49 |
| 10 | 7,354.99 |
| 20 | 14,710 |
| 25 | 18,387.5 |
| 50 | 36,774.9 |
| 100 | 73,549.9 |
| 250 | 183,875 |
| 500 | 367,749 |
| 1,000 | 735,499 |
Horsepower to Watts in Notes Calculator
Notes Calculator is a notepad that does math. Write 100 hp to W 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 horsepower and watts without a separate converter.
| Note | Result |
|---|---|
| 100 hp to W | 73,549.88 W |
| 100 hp in W | 73,549.88 W |
| 10 W as hp | 0.01 hp |
See the unit conversion docs for mixing units in one expression, or open the free web app and try it.
FAQ
Frequently asked questions
- One metric horsepower equals 735.499 watts. To convert horsepower to watts, multiply by 735.499; to go back, multiply by 0.00135962.
- Type the value, the unit, and the target unit on one line: 100 hp to W. 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.
How many watts are in one metric horsepower?
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