The power converter works like this: it converts watts, kilowatts, horsepower (mechanical and metric) and BTU per hour. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.
How to use the Power Converter
Enter or paste the source value.
Confirm the source and target units or formats.
Read the converted result, which updates live as you type.
Copy the output when you are happy with it.
Features
Convert watts to horsepower, kilowatts, BTU/h
Instant result, no page reload
Works in any modern browser, desktop or mobile
Free with no signup
Common mistakes to avoid
Selecting a near-neighbor unit instead of the intended one
Forgetting whether a value is a rate or a total
Examples
Input
Result
1 mechanical HP
745.7 W · 1.0139 metric HP · 2,544.43 BTU/h
Best used for
Getting a reliable answer for power converter without installing an app
One-off tasks done in under a minute from any device
Checking results before committing them to something important
Working on a phone where desktop software is unavailable
Privacy
Conversion runs locally in your browser tab.
Frequently asked questions
Why are there two horsepowers?
Imperial (745.7 W) and metric/PS (735.5 W) definitions both survive; car specs in Europe quote PS, in the US hp.
Why are there two horsepower values?
Mechanical (imperial) horsepower is 745.7 W while metric PS is 735.5 W - car listings in Europe quote PS, so the ~1.4% gap matters when comparing specs across regions.
How do I convert kilowatts to air-conditioner BTU/h?
Multiply kilowatts by 3,412 - the converter produces BTU/h directly, which is how HVAC capacities are labelled in many markets.