Power Converter - Watts, Kilowatts, Horsepower
Free power converter. Switch between watts, kilowatts, horsepower and BTU per hour instantly. Runs in your browser, private and offline.
Convert power between watts, kilowatts, megawatts, horsepower and BTU per hour. The result updates instantly in your browser.
How to Use Power Converter - Watts, Kilowatts, Horsepower
- Enter your value. Type the power you want to convert in the Value box.
- Pick the From unit. Choose the unit your value is in, such as horsepower.
- Pick the To unit. Choose the unit you want the answer in, such as watts. Use the swap button to flip them.
- Read the result. The converted value shows instantly, with the full formula below it.
- See every unit. The table lists your value in all power units at once, and you can copy the result or a share link.
Frequently Asked Questions
How many watts are in one horsepower?
One mechanical horsepower equals about 745.7 watts. To convert horsepower to watts multiply by 745.7; to go the other way divide by 745.7.
What is the difference between hp and PS?
Mechanical horsepower (hp) is about 745.7 watts, while metric horsepower (PS) is about 735.5 watts. Car makers in Europe often quote PS, which is slightly smaller.
How do I convert kilowatts to horsepower?
Multiply the kilowatts by 1.34102 to get mechanical horsepower. For example, 100 kW is about 134 hp.
What is BTU per hour used for?
BTU per hour rates the output of heaters and air conditioners. One BTU per hour equals about 0.293 watts.
Is my data sent anywhere?
No. The conversion runs entirely in your browser, so the values you enter never leave your computer and it works offline once loaded.
Can I compare several power units?
Yes. The table converts your value into every power unit at once, so you can read watts, kilowatts and horsepower together.