Watts to Kilowatts
Convert watts to kilowatts (W to kW). 1 W = 0.001 kW. Use the calculator, formula and conversion table.
How to convert watts to kilowatts
Multiply the amount in watts by 0.001 to get kilowatts. The displayed factor and results are rounded to 12 significant digits.
kW = W × 0.001Worked example
1 W = 0.001 kW. Change the amount in the calculator above to use your own value.
Units and assumptions
A kilowatt is 1,000 watts. Mechanical horsepower and metric horsepower are separate options. BTU per hour uses the International Table BTU.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Watts to Kilowatts table
| Watts (W) | Kilowatts (kW) |
|---|---|
| 0 | 0 |
| 1 | 0.001 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 100 | 0.1 |
| 1,000 | 1 |
About this conversion
What is the formula for watts to kilowatts?
kW = W × 0.001. Multiply the amount in watts by 0.001 to get kilowatts. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to watts?
Use the kilowatts to watts calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the power converter to browse all supported pairs.