How to convert watts to kilowatts
To convert watts to kilowatts, multiply the value by the conversion factor 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).
Worked example: 25 W to kW
- Write the value: 25 W
- Multiply by 0.001: 25 × 0.001
- Result: 0.025 kW
Watt to Kilowatt conversion table
Quick reference values, rounded to 6 significant digits.
| Watt (W) | Kilowatt (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 |
| 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 |
Kilowatt to Watt
| kW | W |
|---|---|
| 1 kW | 1,000 W |
| 5 kW | 5,000 W |
| 10 kW | 10,000 W |
| 50 kW | 50,000 W |
| 100 kW | 100,000 W |
1 Watt in other power units
About Watt and Kilowatt
What is a watt (W)?
The watt is the SI unit of power, one joule per second.
What is a kilowatt (kW)?
A kilowatt equals 1,000 watts, used for motors, generators and electricity load.
Air-conditioner tip: a 1-ton AC provides 12,000 BTU/h of cooling. A rough rule for Bangladesh is 1 ton per 100–120 sq ft of room area, more for top floors and west-facing rooms.
Where watt to kilowatt conversion is used
Power conversions are needed for choosing air conditioners, generators, IPS/UPS, motors and solar panels. Converting between watts and kilowatts is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Power Converter.
Frequently asked questions
How many kilowatts are in 1 watt?
1 Watt equals 0.001 kW.
How do I convert watts to kilowatts?
Multiply the number of watts by 0.001. For example, 25 W × 0.001 = 0.025 kW.
What is 25 W in kW?
25 W = 0.025 kW.
How many watts are in 1 kilowatt?
1 Kilowatt equals 1,000 W. Use the kW to Watts converter for the reverse direction.
Is this Watt to Kilowatt converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.