1. Convert to base units
watts = input value x input unit factor
Every supported power unit is stored as a factor relative to watts.
Electrical unit converter
Power Unit Converter
Convert power units for electrical systems, motors, HVAC, energy analysis, physics, and engineering calculations.
Live power conversion
Convert power units
Enter a value, choose the starting unit, and select a target unit. The full power conversion table updates automatically.
Converted value
All units
Power conversion table
Compare the entered value across electrical, mechanical, HVAC, and large-scale energy units.
Common conversions
Useful power conversion factors
| Conversion | Factor | Typical use |
|---|---|---|
| Kilowatts to watts | W = kW x 1000 | Electrical loads and equipment ratings |
| Watts to kilowatts | kW = W / 1000 | Energy and power reports |
| Horsepower to kilowatts | kW = hp x 0.745699872 | Motors and mechanical systems |
| BTU/h to watts | W = BTU/h x 0.29307107 | HVAC and heat transfer |
| Megawatts to kilowatts | kW = MW x 1000 | Plant and generator output |
| Milliwatts to watts | W = mW / 1000 | Electronics and signal power |
How it works
Power conversion method
2. Convert to target units
target value = base value / target unit factor
The selected result and table values are calculated from the same base value.
3. Check precision
rounding depends on scale
Very small and very large values use compact scientific notation to stay readable.
FAQ
Power converter questions
How do you convert kilowatts to watts?
Multiply kilowatts by 1000 to convert kilowatts to watts.
How do you convert horsepower to kilowatts?
Multiply mechanical horsepower by about 0.745699872 to convert horsepower to kilowatts.
Is power the same as energy?
No. Power is the rate of energy transfer, measured in watts. Energy is power integrated over time, such as joules or kilowatt-hours.
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