Direct conversion
Convert watt [W] to kilowatt [kW] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 watt [W] = 0.001 kilowatt [kW]
1 watt [W] = 0.001 kilowatt [kW]
Example: 1 watt [W] equals 0.001 kilowatt [kW].
Power conversions use watt as the reference unit and include mechanical horsepower, electrical power, and heat-rate units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The watt is the SI derived unit of power equal to one joule per second.
HistoryThe watt is named after James Watt and became the standard unit for power output and consumption.
Current useWatts are used for appliances, electronics, lighting, motors, solar panels, and power ratings.
The kilowatt is a power unit equal to 1000 watts.
HistoryKilowatts became common as electrical and mechanical systems needed larger power ratings.
Current useKilowatts are used for generators, electric vehicles, HVAC, solar systems, appliances, and energy planning.
| watt [W] | kilowatt [kW] |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1000 | 1 |
Use this formula: 1 watt [W] = 0.001 kilowatt [kW] Enter your value in the calculator and the result updates instantly.
1 watt [W] equals 0.001 kilowatt [kW].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.