Formula
kW to mW conversion formula
Use this relationship for a direct conversion:
mW = kW x 1,000,000
Worked example
2 kW = 2,000,000 mW.
Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.
Power conversion
Convert Kilowatt to Milliwatt
1 kilowatt (kW) equals 1,000,000 milliwatt (mW). Enter any value below to convert from kW to mW.
Enter a value and choose units. Results update instantly.
1 kW = 1,000,000 mW
All Power units
From 1 kW| Unit | Value |
|---|---|
| Watt W | 1,000 |
| Kilowatt kW | 1 |
| Megawatt MW | 0.001 |
| Milliwatt mW | 1,000,000 |
| Mechanical horsepower hp(I) | 1.3410220896 |
| Metric horsepower PS | 1.3596216173 |
| BTU (IT) per hour BTU/h | 3,412.1416331279 |
| Foot-pound per second ft·lb/s | 737.5621492773 |
Recent conversions
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Quick reference
Kilowatt to Milliwatt table
| Kilowatt (kW) | Milliwatt (mW) |
|---|---|
| 0.01 | 10,000 |
| 0.1 | 100,000 |
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 1,000 | 1,000,000,000 |
From unit
About the kilowatt
One thousand watts.
Symbol: kW
To unit
About the milliwatt
One thousandth of a watt.
Symbol: mW
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Related conversions
Source
Conversion standard
Definitions are checked against NIST SP 811: Power units. Calculations use full internal precision before display rounding.
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kW to mW FAQ
How do you convert kilowatt to milliwatt?
Use the formula mW = kW x 1,000,000. 1 kilowatt (kW) equals 1,000,000 milliwatt (mW).
Is the kW to mW conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.