Power Converter
Convert between watts, kilowatts, megawatts, horsepower, and BTU per hour. Used in electrical engineering, automotive, and HVAC.
1 Watt (W) = 0.001 Kilowatt (kW)
1 Watt (W) in all units
| Unit | Value |
|---|---|
| Watt (W)input | 1 |
| Kilowatt (kW) | 0.001 |
| Megawatt (MW) | 0.000001 |
| Horsepower (hp) | 0.001341021859 |
| BTU/hour | 3.41214245 |
How to Use the Power Converter
- 1
Select the power unit you want to convert FROM (e.g. horsepower).
- 2
Enter the numeric value.
- 3
Select the unit you want to convert TO (e.g. kilowatts).
- 4
The result appears instantly.
- 5
Use the ⇄ swap button to reverse.
- 6
See all units in the table below.
Power Conversion Formulas
1 kW = 1,000 W
1 MW = 1,000,000 W
1 hp = 745.7 W
1 BTU/h = 0.293071 WFrequently Asked Questions
How many watts in a horsepower?
1 mechanical horsepower = 745.7 watts. 1 metric horsepower = 735.499 watts.
What is the difference between power and energy?
Power is the rate of energy transfer (watts = joules per second). Energy is the total amount transferred over time (kWh = kW × hours).
How many watts in a kilowatt?
1 kilowatt (kW) = 1,000 watts (W). A typical home uses about 1–3 kW on average.
What is BTU/hour?
BTU/hour measures heating or cooling power. 1 BTU/h = 0.293071 W. Air conditioners are often rated in BTU/h.