Motor Power Converter
Convert motor power between horsepower (HP), kilowatts (kW), watts, and BTU per hour.
Type in any field and the others update automatically.
Type in any field — the others update instantly.
Motor power conversion factors.
Base conversions:
- 1 HP (mechanical) = 745.7 watts = 0.7457 kW
- 1 kW = 1.341 HP = 1,000 watts
- 1 HP = 2,544.43 BTU/hr
- 1 kW = 3,412.14 BTU/hr
Common motor sizes:
- Small fan: 1/4 HP (186 W)
- Garage door opener: 1/2 HP (373 W)
- Power tools: 1-3 HP (746-2,237 W)
- Car engine: 150-300 HP (112-224 kW)
- Electric car: 200-400 HP (149-298 kW)
- Diesel truck: 300-600 HP (224-447 kW)
Types of horsepower:
- Mechanical/Imperial HP: 745.7 W (used for engines)
- Metric HP (PS): 735.5 W (used in Europe)
- Electrical HP: 746 W (used for electric motors)