Convert Watt to Kilowatt
Use this free converter to change watts (W) into kilowatts (kW). Watt and kilowatt both measure power. As a quick reference, 1 W equals 0.001 kW, and 1 kW equals 1000 W.
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Kilowatt (kW)
0.001
1 W = 0.001 kW
Power conversion table
| Watt | Kilowatt |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
How to convert Watt to Kilowatt
Multiply the watt value by 0.001 to get kilowatts.
- Enter the number of watts you want to convert.
- The converter instantly shows the equivalent value in kilowatts.
- Worked example: 15 W × 0.001 = 0.015 kW.
- Use the swap button to reverse the conversion (kilowatt to watt).
About these units
Watt (W)
- Definition
- The watt (W) is the SI unit of power, equal to one joule of energy per second.
- History
- Named after James Watt, the improver of the steam engine.
- Current use
- Watts rate the power of light bulbs, appliances, and electronics everywhere.
Kilowatt (kW)
- Definition
- A kilowatt (kW) is 1,000 watts, used for larger power figures.
- History
- It is a metric multiple of the watt.
- Current use
- Kilowatts rate motors, heaters, EV chargers, and home solar systems.
Frequently asked questions
How many kilowatts are in a watt?
There are 0.001 kW in 1 W. To convert, multiply the number of watts by 0.001.
How do I convert watts to kilowatts?
Multiply the watt value by 0.001 to get kilowatts. For example, 10 W = 0.01 kW.
Is this watt-to-kilowatt converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Watt to other power units
| Unit | 1 Watt equals |
|---|---|
| Kilowatt (kW) | 0.001 kW |
| Megawatt (MW) | 0.000001 MW |
| Horsepower (hp) | 0.0013410221 hp |
| Metric Horsepower (PS) | 0.0013596216 PS |
| BTU per Hour (BTU/h) | 3.4121416 BTU/h |