Power Converter
Convert power values instantly between watts, kilowatts, megawatts, horsepower and BTU per hour. Whether you are sizing a generator, comparing motor ratings, or reading appliance labels, this free tool updates live as you type — no signup needed.
How to use
- Enter your power value in the input box above.
- Choose the unit you are converting from and the unit you need.
- The result updates instantly — try another unit to compare side by side.
- For motors, note the small difference between hp and metric PS in the note below.
Tips
- Motor horsepower (hp) and metric horsepower (PS) differ slightly — check which one your rating uses.
- For air conditioning, remember that 1 ton of refrigeration equals 3516.85 W.
- When comparing appliances, convert everything to watts first so the numbers line up.
Note
For AC cooling capacity, 1 ton of refrigeration = 3516.85 W. There is a small difference between motor hp and metric PS.
Frequently Asked Questions (FAQ)
Which power units can I convert?
Watts, kilowatts, megawatts, horsepower and BTU per hour. Results update live as you type.
How do I swap the units?
Press the swap button between the From and To dropdowns to reverse the conversion instantly.
What is the difference between hp and PS?
Motor horsepower (hp) and metric horsepower (PS) differ slightly, so check which one your rating uses before comparing.
How many watts is one ton of air conditioning?
One ton of refrigeration equals 3516.85 watts. This is handy when reading AC capacity labels.