100% free · No sign-up · Runs in your browser
Convert watts to horsepower
Instant, accurate W → hp conversion with a live converter, table and formula.
=
1 watt = 0.00134102 horsepower
1 horsepower = 745.7 watts
watts to horsepower table
| watts (W) | horsepower (hp) |
|---|---|
| 0.5 | 0.000670511 |
| 1 | 0.00134102 |
| 2 | 0.00268204 |
| 5 | 0.00670511 |
| 10 | 0.0134102 |
| 20 | 0.0268204 |
| 50 | 0.0670511 |
| 100 | 0.134102 |
| 500 | 0.670511 |
| 1000 | 1.34102 |
Formula
horsepower = watts × 0.00134102.
Example
10 watts = 0.0134102 horsepower.
What is a watt?
The watt (W) is the SI unit of power (one joule per second).
What is a horsepower?
Horsepower (hp) is about 746 watts, used for engines.
Real-world reference points
An LED bulb draws ~9 W; a kettle ~2,000 W; a small car engine ~100 hp (~75 kW).
| Reference | watts | horsepower |
|---|---|---|
| LED bulb | 9 W | 0.0121 hp |
| Laptop charging | 65 W | 0.0872 hp |
| Microwave | 900 W | 1.21 hp |
| Electric kettle | 2,000 W | 2.68 hp |
| Small car engine (100 hp) | 74,570 W | 100 hp |
Mistakes to avoid with power conversions
- kW vs kWh again: power is the rate, energy is the amount — a 2 kW kettle for 6 minutes uses 0.2 kWh.
- Mixing metric and mechanical horsepower (~1.4% apart) when comparing engine specs across regions.
- Sizing inverters/generators on running watts while ignoring appliance startup surges.
Frequently asked questions
How many horsepower in a watts?+
1 watt = 0.00134102 horsepower.
How do I convert watts to horsepower?+
Enter the value in the watts box above and the horsepower value appears instantly. You can also type in the horsepower box to convert the other way.
Is this W to hp converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.