The watt
The watt (W) is the SI derived unit of power, equal to one joule per second. It is the standard unit for the rated power of every electrical device and every modern engine specification outside automotive marketing.
Watts to Kilowatts Converter
1 W = 0.001 kW
1 watt equals 0.001 kilowatts. To convert watts to kilowatts, multiply the watt value by 0.001. For quick reference: 1 W = 0.001 kW, 5 W = 0.005 kW, 10 W = 0.01 kW, 100 W = 0.1 kW.
Formula
Kilowatts = Watts × 0.001Quick
How to convert watts to kilowatts
Take your value
Start with your value in watts.
Multiply by 0.001
Multiply the watt value by 0.001. This is the exact conversion factor from watts to kilowatts.
Read the result
The product is your value in kilowatts. For example, 5 W × 0.001 = 0.005 kW.
Conversion formula
The exact factor from watts to kilowatts is 0.001.
Kilowatts = Watts × 0.001
Watts to Kilowatts conversion table
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Watts (W) | Kilowatts (kW) |
|---|---|
| 0.1 W | 0.0001 kW |
| 0.5 W | 0.0005 kW |
| 1 W | 0.001 kW |
| 2 W | 0.002 kW |
| 5 W | 0.005 kW |
| 8 W | 0.008 kW |
| 10 W | 0.01 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 |
| 60 W | 0.06 kW |
| 75 W | 0.075 kW |
| 100 W | 0.1 kW |
| 125 W | 0.125 kW |
| 150 W | 0.15 kW |
| 200 W | 0.2 kW |
| 250 W | 0.25 kW |
| 300 W | 0.3 kW |
| 400 W | 0.4 kW |
| 500 W | 0.5 kW |
| 600 W | 0.6 kW |
| 750 W | 0.75 kW |
| 800 W | 0.8 kW |
| 1000 W | 1 kW |
| 1200 W | 1.2 kW |
| 1500 W | 1.5 kW |
| 1800 W | 1.8 kW |
| 2000 W | 2 kW |
| 2500 W | 2.5 kW |
| 3000 W | 3 kW |
| 5000 W | 5 kW |
| 7500 W | 7.5 kW |
| 10000 W | 10 kW |
| 15000 W | 15 kW |
| 20000 W | 20 kW |
| 25000 W | 25 kW |
| 50000 W | 50 kW |
| 75000 W | 75 kW |
| 100000 W | 100 kW |
| 200000 W | 200 kW |
| 500000 W | 500 kW |
| 1000000 W | 1000 kW |
| 2000000 W | 2000 kW |
| 5000000 W | 5000 kW |
| 10000000 W | 10000 kW |
| 100000000 W | 100000 kW |
| 1000000000 W | 1000000 kW |
Real-world reference
An LED bulb uses about 8 W. A typical microwave oven draws around 1,000 W.
Frequently asked questions
- How many kilowatts are in 1 watt?
- 1 watt equals 0.001 kilowatts.
- How do I convert watts to kilowatts?
- Multiply the watt value by 0.001. So x W × 0.001 = the equivalent in kW.
- What is 5 watts in kilowatts?
- 5 watts equals 0.005 kilowatts.
- What is 10 watts in kilowatts?
- 10 watts equals 0.01 kilowatts.
- What is 100 watts in kilowatts?
- 100 watts equals 0.1 kilowatts.
- How do I convert back from kilowatts to watts?
- Multiply the kilowatt value by 1000. For example, 1 kW = 1000 W.
- Is the watt bigger than the kilowatt?
- No. 1 watt is smaller than 1 kilowatt. It takes 1000 watts to equal 1 kilowatt.
- Are these conversion factors exact?
- Yes. The factor of 0.001 is derived directly from the SI definitions of watt and kilowatt.
About the watt and the kilowatt
The kilowatt
The kilowatt (kW) equals exactly 1,000 watts. It is the unit on EV motor ratings, household solar arrays, and most modern automotive horsepower equivalents outside the US.