Power Converter
Convert power between watts, kilowatts, megawatts, horsepower and BTU per hour.
Power Converter
Convert power between watts, kilowatts, megawatts, horsepower and BTU per hour.
How to use the Power Converter
- Enter the value.
- Select source and target units.
- Click Calculate.
Formula
1 hp = 745.7 W (mechanical)
1 BTU/h ≈ 0.2931 W
1 kW = 1000 W
Example
100 hp to kW: 100 × 745.7 / 1000 = 74.57 kW.
Step-by-step calculation
- Convert to watts: 100 × 745.7 = 74,570 W.
- Convert to kW: 74,570 / 1000 = 74.57 kW.
Real-world uses
- Engine and motor rating comparison.
- Electrical appliance comparison.
- HVAC system sizing.
Common mistakes
- Confusing mechanical hp with electrical hp.
- Mixing up kW and kWh (power vs energy).
- Using the wrong type of horsepower.
Frequently asked questions
What is the difference between kW and kWh?
kW is power (rate of energy use). kWh is energy (power × time). A 1 kW heater running 1 hour uses 1 kWh.
What types of horsepower exist?
Mechanical/Imperial hp = 745.7 W. Metric hp = 735.5 W. Electrical hp = 746 W.
Which units are supported?
W, kW, MW, hp (mechanical), BTU/h, ft·lb/s.