Free Power Converter
Car engines boast horsepower, light bulbs sip watts, and air conditioners are rated in BTU per hour. This free power converter translates between them instantly — watts, kilowatts, megawatts, both horsepower standards and more — with every equivalent in one table.
Value in all power units
| Unit | Value |
|---|
How to Use the Power Converter
- Enter a value in the input box above.
- Choose the units to convert from and to — use the ⇄ button to swap them instantly.
- See the result immediately, plus the value converted into every other power unit in the table below.
- Copy the result with one click to use it anywhere.
Features
Seven power units including mechanical and metric horsepower, BTU/hour and foot-pounds per second. Live conversion, direction swap, and a complete comparison table.
Benefits & Use Cases
Car buyers comparing specs across markets, homeowners sizing generators or AC units, and engineering students all get clear answers. The two horsepower definitions are kept distinct so specs never get mixed up.
Tips
Mechanical horsepower (745.7 W, used for cars in the US/UK) is slightly stronger than metric horsepower (735.5 W, used in Europe). For engines, 100 kW ≈ 134 mechanical hp.
Frequently Asked Questions
How many watts are in one horsepower?
745.7 W for mechanical horsepower; 735.5 W for metric horsepower.
How do I convert kW to horsepower?
Divide by 0.7457 for mechanical hp. For example, 100 kW ≈ 134.1 hp.
What is BTU per hour?
A power unit common for heaters and AC: 1 BTU/h ≈ 0.293 W. A 12,000 BTU/h AC unit provides about 3.5 kW of cooling.
How many watts does a typical home use?
It varies, but 1–2 kW of continuous draw is common — try converting your bill’s kWh into average watts.
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