Watts to Kilowatts Converter W → kW
1 watt (W) = 0.001 kilowatts (kW). Type a value below — the conversion happens instantly, entirely on your device.
1 W = 0.001 kW
1500 watts = 1.5 kilowatts
1500 × 0.001 = 1.5
1 W equals 0.001 kW, so multiplying by 0.001 converts the value. The result describes the exact same quantity — only the measuring stick changes.
How to convert watts to kilowatts
kilowatts = watts × 0.001 — multiply the watt value by 0.001.
Example: 1500 W = 1.5 kW.
To convert the other way: watts = kilowatts ÷ 0.001
Divide watts by 1,000: a 1,500 W space heater draws 1.5 kW. This is the step before electricity-cost math — 1.5 kW running for an hour uses 1.5 kWh.
Watts to Kilowatts conversion table
| Watts (W) | Kilowatts (kW) |
|---|---|
| 0.1 | 0.0001 |
| 0.25 | 0.00025 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 6 | 0.006 |
| 7 | 0.007 |
| 8 | 0.008 |
| 9 | 0.009 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 30 | 0.03 |
| 40 | 0.04 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
About the units
What is a watt?
The watt (W) is the SI unit of power — one joule per second. Light bulbs, chargers and speakers are rated in watts.
What is a kilowatt?
A kilowatt (kW) is 1,000 watts. Electric vehicle motors, home appliances and solar systems are rated in kilowatts; 1 kW ≈ 1.34 hp.
Frequently asked questions
How many kilowatts are in 1 watt?
1 watt (W) = 0.001 kilowatts (kW).
What is the formula to convert watts to kilowatts?
kilowatts = watts × 0.001 — multiply the watt value by 0.001.
How do I convert W to kW without a calculator?
Multiply by 0.001 for a close estimate. Exact factor: 1 W = 0.001 kW.
Is this W-to-kW converter accurate and private?
Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.