Power conversion

Convert Milliwatt to Kilowatt

1 milliwatt (mW) equals 0.000001 kilowatt (kW). Enter any value below to convert from mW to kW.

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1 mW = 0.000001 kW

All Power units

From 1 mW
UnitValue
Watt W 0.001
Kilowatt kW 0.000001
Megawatt MW 0.000000001
Milliwatt mW 1
Mechanical horsepower hp(I) 0.000001341
Metric horsepower PS 0.0000013596
BTU (IT) per hour BTU/h 0.0034121416
Foot-pound per second ft·lb/s 0.0007375621
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Formula

mW to kW conversion formula

Use this relationship for a direct conversion:

kW = mW x 0.000001

Worked example

2 mW = 0.000002 kW.

Horsepower type is always identified because mechanical and metric horsepower differ by about 1.4 percent.

Quick reference

Milliwatt to Kilowatt table

Milliwatt (mW)Kilowatt (kW)
0.010.00000001
0.10.0000001
10.000001
20.000002
50.000005
100.00001
250.000025
500.00005
1000.0001
1,0000.001

From unit

About the milliwatt

One thousandth of a watt.

Symbol: mW

To unit

About the kilowatt

One thousand watts.

Symbol: kW

Keep converting

Related conversions

Kilowatt to MilliwattReverse this conversion Milliwatt to WattmW to WMilliwatt to MegawattmW to MWMilliwatt to Mechanical horsepowermW to hp(I)Milliwatt to Metric horsepowermW to PSMilliwatt to BTU (IT) per hourmW to BTU/hMilliwatt to Foot-pound per secondmW to ft·lb/s

Source

Conversion standard

Definitions are checked against NIST SP 811: Power units. Calculations use full internal precision before display rounding.

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Questions

mW to kW FAQ

How do you convert milliwatt to kilowatt?

Use the formula kW = mW x 0.000001. 1 milliwatt (mW) equals 0.000001 kilowatt (kW).

Is the mW to kW conversion exact?

Both unit definitions use exact factors. Only the displayed decimal may be rounded.