Power Converter
Convert power between watts, kilowatts, megawatts, and mechanical horsepower, for example for appliance ratings, engine output, or generator sizing.
Formula: multiply the source value by 0.74569987
Quick Conversions
About this tool
Power is energy per time. The watt is the SI unit. Mechanical horsepower is 550 ft·lbf/s, or about 745.7 W.
How to use it
Enter a power value, choose units, and read the result as you type.
value_to = value_from Ă (from_in_watts / to_in_watts)
Examples
100 hp to kW
100 Ă 745.7 / 1,000 â 74.57 kW.
150 hp to kW
150 Ă 0.7457 = 111.855 kW.
2,000 W to kW
2,000 Ă 0.001 = 2 kW.
Every unit expressed in watts
| Unit | Equal to (W) |
|---|---|
| 1 watt (W) | 1 |
| 1 kilowatt (kW) | 1,000 |
| 1 megawatt (MW) | 1,000,000 |
| 1 horsepower (hp) | 745.6998716 |
FAQ
Metric or mechanical horsepower?
Mechanical (imperial) horsepower, 745.7 W. Metric PS is about 735.5 W.
How does this relate to energy?
Energy = power Ă time. Convert power here, then duration in the time converter.
Which horsepower is used?
Mechanical (imperial) horsepower, about 745.70 W. Metric horsepower (PS) is about 735.50 W, so the two differ by roughly 1.4%.