How to convert watts to kilowatts
kW = W × 0.001Multiply the value in watts by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
A watt is smaller than a kilowatt: it takes 1,000 watts to make one kilowatt.
Worked examples
- 1 watt1 W × 0.001 = 0.001 kW
- 5 watts5 W × 0.001 = 0.005 kW
- 10 watts10 W × 0.001 = 0.01 kW
- 20 watts20 W × 0.001 = 0.02 kW
- 100 watts100 W × 0.001 = 0.1 kW
Watts to kilowatts conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Watts (W) | Kilowatts (kW) |
|---|---|
| 0.1 W | 0.0001 kW |
| 0.25 W | 0.00025 kW |
| 0.5 W | 0.0005 kW |
| 1 W | 0.001 kW |
| 2 W | 0.002 kW |
| 3 W | 0.003 kW |
| 4 W | 0.004 kW |
| 5 W | 0.005 kW |
| 6 W | 0.006 kW |
| 7 W | 0.007 kW |
| 8 W | 0.008 kW |
| 9 W | 0.009 kW |
| 10 W | 0.01 kW |
| Watts (W) | Kilowatts (kW) |
|---|---|
| 12 W | 0.012 kW |
| 15 W | 0.015 kW |
| 20 W | 0.02 kW |
| 25 W | 0.025 kW |
| 30 W | 0.03 kW |
| 40 W | 0.04 kW |
| 50 W | 0.05 kW |
| 75 W | 0.075 kW |
| 100 W | 0.1 kW |
| 250 W | 0.25 kW |
| 500 W | 0.5 kW |
| 1,000 W | 1 kW |
About the units
Watt (W)
The SI unit of power: one joule per second. An LED bulb draws around 10 W, a microwave about 1,000 W.
Kilowatt (kW)
One thousand watts. Electric-vehicle motors, home solar arrays and engines are rated in kW. One kilowatt equals 1,000 watts (W).
Frequently asked questions
How many kilowatts are in one watt?
There are 0.001 kilowatts in one watt, and this value is exact by definition.
How do I convert watts to kilowatts?
Multiply the number of watts by 0.001. For example, 10 W × 0.001 = 0.01 kW.
How many watts are in one kilowatt?
One kilowatt equals 1,000 watts. That is the reverse factor, 1 ÷ 0.001.
What is 10 watts in kilowatts?
10 W = 0.01 kW.
Is this W to kW converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.