Power Converter
Convert mechanical and electrical power between Watts, Kilowatts, and Horsepower.
Converted Power
—
—
How to Convert Power Units (Watts vs Horsepower)
- Enter the mechanical or electrical power value.
- Select input: Watts (W), Kilowatts (kW), Mechanical Horsepower (hp), Metric Horsepower (PS), or Megawatts (MW).
- View equivalent power ratings.
Power Conversion Constants
-
1 Mechanical HP = 745.69987 Watts -
1 Metric Horsepower (PS) = 735.49875 Watts -
1 Kilowatt (kW) = 1.34102 Mechanical HP
Example
-
An electric vehicle with a
150 kWmotor produces~201.15 horsepower.
Common Applications
- Automotive engine horsepower to kilowatt comparisons (EVs).
- Industrial electric motor and generator sizing.
- Solar panel inverter wattage ratings.
Frequently Asked Questions
How many watts are in one horsepower?
One standard mechanical horsepower equals approximately 745.7 Watts.
Why do European cars list power in kW or PS?
European regulations require official engine ratings in Kilowatts (SI standard) or metric PS (Pferdestärke), slightly different from Imperial HP.