100% free · No sign-up · Runs in your browser
Convert watts to kilowatts
Instant, accurate W → kW conversion with a live converter, table and formula.
=
1 watt = 0.001 kilowatts
1 kilowatt = 1000 watts
watts to kilowatts table
| watts (W) | kilowatts (kW) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
kilowatts = watts × 0.001.
Example
10 watts = 0.01 kilowatts.
What is a watt?
The watt (W) is the SI unit of power (one joule per second).
What is a kilowatt?
A kilowatt (kW) is 1,000 watts.
Real-world reference points
An LED bulb draws ~9 W; a kettle ~2,000 W; a small car engine ~100 hp (~75 kW).
| Reference | watts | kilowatts |
|---|---|---|
| LED bulb | 9 W | 0.009 kW |
| Laptop charging | 65 W | 0.065 kW |
| Microwave | 900 W | 0.9 kW |
| Electric kettle | 2,000 W | 2 kW |
| Small car engine (100 hp) | 74,570 W | 74.57 kW |
Mistakes to avoid with power conversions
- kW vs kWh again: power is the rate, energy is the amount — a 2 kW kettle for 6 minutes uses 0.2 kWh.
- Mixing metric and mechanical horsepower (~1.4% apart) when comparing engine specs across regions.
- Sizing inverters/generators on running watts while ignoring appliance startup surges.
Frequently asked questions
How many kilowatts in a watts?+
1 watt = 0.001 kilowatts.
How do I convert watts to kilowatts?+
Enter the value in the watts box above and the kilowatts value appears instantly. You can also type in the kilowatts box to convert the other way.
Is this W to kW converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.