Watts to Horsepower
Convert watts to horsepower instantly, with a reference table.
Watts to Horsepower at a glance
Watts to Horsepower is a free online converter you can use right now to convert watts to horsepower instantly, with a reference table โ no account, no install and no usage limit. It runs entirely inside your browser, so whatever you enter stays on your own device.
- Price
- Free โ no trial, no paid tier, no watermark
- Sign-up
- Not required
- Where it runs
- In your browser โ nothing is uploaded to a server
- Works on
- Chrome, Safari, Firefox and Edge โ desktop, tablet and phone
- Category
- Unit Conversions
Watts to Horsepower conversion table
| Watts (W) | Horsepower (hp) |
|---|---|
| 1 W | 0.001341 hp |
| 2 W | 0.002682 hp |
| 3 W | 0.004023 hp |
| 5 W | 0.006705 hp |
| 10 W | 0.01341 hp |
| 25 W | 0.033526 hp |
| 50 W | 0.067051 hp |
| 100 W | 0.134102 hp |
| 500 W | 0.670511 hp |
| 1000 W | 1.341022 hp |
About Watts to Horsepower
Convert watts to horsepower instantly, with a reference table of common values. The factor is exact: 1 W = 0.001341022 hp.
Used for smaller motors and appliances, where output is rated in watts but has to be compared against equipment specified in horsepower.
The watt is one joule per second โ a rate of energy use rather than an amount. It is named after James Watt, whose improvements to the steam engine drove much of the Industrial Revolution. It is the SI unit of power, used for appliances, lighting, audio equipment and electrical ratings everywhere. A modern LED bulb draws 8 to 12 W, and a kettle around 2,000 to 3,000 W.
Worked through with real numbers: 1 W is 0.001341 hp, 100 W is 0.134102 hp, 1000 W is 1.341 hp.
As for the other side of the conversion: one horsepower is about 746 watts, and a typical family car engine produces 120 to 200 hp.
Power is a rate โ energy per unit time โ not an amount of energy. A kilowatt describes how fast energy is used; a kilowatt-hour describes how much was used. Confusing the two is the most common error in reading an electricity bill.
How to use Watts to Horsepower
- Enter the number of watts you want to convert.
- The equivalent in horsepower appears instantly โ there is no button to press.
- Check the reference table for common Watts to Horsepower values.
Frequently asked questions
How do I convert watts to horsepower?
Multiply your watts figure by 0.001341022 to get horsepower โ or type a value above and read the answer straight off.
How many horsepower are in one watt?
1 W = 0.001341022 hp.
When would I need to convert watts to horsepower?
Used for smaller motors and appliances, where output is rated in watts but has to be compared against equipment specified in horsepower.
What is a watt, exactly?
The watt is one joule per second โ a rate of energy use rather than an amount. It is named after James Watt, whose improvements to the steam engine drove much of the Industrial Revolution. A modern LED bulb draws 8 to 12 W, and a kettle around 2,000 to 3,000 W.
Where is the horsepower actually used?
It remains the standard for engine output in the United States and in automotive marketing worldwide, alongside kilowatts. One horsepower is about 746 watts, and a typical family car engine produces 120 to 200 hp.
Is there anything tricky about power conversions?
Power is a rate โ energy per unit time โ not an amount of energy. A kilowatt describes how fast energy is used; a kilowatt-hour describes how much was used. Confusing the two is the most common error in reading an electricity bill.
Is this converter accurate?
Yes. It uses the exact standard factor of 1 W = 0.001341022 hp, and the conversion runs in your browser so nothing is uploaded.