Milliwatt to Kilowatt Converter
Convert Milliwatt (mW) to Kilowatt (kW) instantly. 1 mW = 1.000000e-6 kW.
Power Converter
22 units available
1 mW = 1.000000e-6 kW
Formula:
kW = mW × 0.000001With your value: 1 mW = 1.000000e-6 kW
How big is that?
Everyday references on a logarithmic scale, all expressed in milliwatt so you can sanity-check the result.
Other Milliwatt to Kilowatt conversions
Milliwatt to Kilowatt Conversion Table
| Milliwatt (mW) | Kilowatt (kW) |
|---|---|
| 0.5 | 5.000000e-7 |
| 1 | 1.000000e-6 |
| 2 | 2.000000e-6 |
| 5 | 5.000000e-6 |
| 10 | 1.000000e-5 |
| 15 | 1.500000e-5 |
| 20 | 2.000000e-5 |
| 25 | 2.500000e-5 |
| 50 | 5.000000e-5 |
| 100 | 0.0001 |
| 250 | 0.00025 |
| 500 | 0.0005 |
| 1000 | 0.001 |
Kilowatt to Milliwatt Conversion Table
| Kilowatt (kW) | Milliwatt (mW) |
|---|---|
| 0.5 | 500,000 |
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 15 | 15,000,000 |
| 20 | 20,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 250 | 250,000,000 |
| 500 | 500,000,000 |
| 1000 | 1,000,000,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Milliwatt (mW)
Power
Derived from the watt (1 W = 1 J/s).
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Kilowatt (kW)
Power
Derived from the watt (1 W = 1 J/s).
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Milliwatt to Kilowatt
To convert from Milliwatt (mW) to Kilowatt (kW), multiply the value by 1.000000e-6.
Formula: kW = mW × 0.000001
Reverse: mW = kW × 1,000,000
Step-by-Step Example
- Start with your value in Milliwatt. For example: 5 mW
- Multiply by the conversion factor: 5 x 1.000000e-6
- The result is: 5.000000e-6 kW
About Milliwatt
The milliwatt (mW) is a unit of power. One milliwatt equals 0.001 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: power calculations, engineering and science, education.
About Kilowatt
The kilowatt (kW) is a unit of power. One kilowatt equals 1000 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: power calculations, engineering and science, education.
Frequently Asked Questions
How many Kilowatt are in 1 Milliwatt?
There are exactly 1.000000e-6 Kilowatt in 1 Milliwatt. This means the conversion factor from Milliwatt to Kilowatt is 1.000000e-6.
What is the formula to convert Milliwatt to Kilowatt?
The formula to convert Milliwatt to Kilowatt is: kW = mW × 0.000001. For example, to convert 10 Milliwatt to Kilowatt, you would multiply 10 by 1.000000e-6.
What is a Milliwatt?
The milliwatt (mW) is a unit of power. One milliwatt equals 0.001 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Kilowatt?
The kilowatt (kW) is a unit of power. One kilowatt equals 1000 watts. UnitConvertLab converts it against every other power unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Milliwatt?
The Milliwatt is commonly used in power calculations, engineering and science, education.
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Cite this page
UnitConvertLab. (2026). Milliwatt to Kilowatt converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/milliwatt-to-kilowatt