Convert milliwatts to watts

Conversion Calculator

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How to convert milliwatts to watts: Enter a value in the milliwatts field and click on the "Calculate watts" button. Your answer will appear in the watts field.

Conversion Definitions

The following is a list of definitions relating to conversions between milliwatts and watts.

What is a milliwatt (mW)?

A milliwatt is a unit of power in the International System of Units (SI). The symbol for milliwatt is mW. There are 1,000 milliwatts in a watt.

What is a watt (W)?

A watt is a unit of power in the International System of Units (SI). The symbol for watt is W. There are 0.001 watts in a milliwatt.

Conversion Formula

Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from milliwatts to watts is:

watts = milliwatts ÷ 1,000

Conversion Example

Next, let's look at an example showing the work and calculations that are involved in converting from milliwatts to watts (mW to W).

Milliwatt to Watt Conversion Example

Task: Convert 45,000 milliwatts to watts (show work)

Formula:
milliwatts ÷ 1,000 = watts

Calculations:
45,000 milliwatts ÷ 1,000 = 45 watts

Result:
45,000 milliwatts is equal to 45 watts

Conversion Table

For quick reference purposes, below is a conversion table that you can use to convert from milliwatts to watts.

Milliwatts to Watts Conversion Chart

milliwatts (mW)	watts (W)
1 mW	0.001 W
2 mW	0.002 W
3 mW	0.003 W
4 mW	0.004 W
5 mW	0.005 W
6 mW	0.006 W
7 mW	0.007 W
8 mW	0.008 W
9 mW	0.009 W
10 mW	0.01 W
20 mW	0.02 W
30 mW	0.03 W
40 mW	0.04 W
50 mW	0.05 W
75 mW	0.075 W
100 mW	0.1 W
250 mW	0.25 W
500 mW	0.5 W
750 mW	0.75 W
1,000 mW	1 W
2,500 mW	2.5 W
5,000 mW	5 W
7,500 mW	7.5 W
10,000 mW	10 W
25,000 mW	25 W
50,000 mW	50 W
75,000 mW	75 W
100,000 mW	100 W
250,000 mW	250 W

Related Units

The following tables provides a summary of the Power or Electricity units within their respective measurement systems.

Electric Current Units

Unit	Symbol	Measurement System	Description
milliamperes ("milliamps")	mA	International System of Units (SI)	1 A = 1,000 mA
amperes ("amps")	A	International System of Units (SI)	base unit for electric current

Electric Potential Units

Unit	Symbol	Measurement System	Description
nanovolts	nV	International System of Units (SI)	1 V = 1,000,000,000 nV
millivolts	mV	International System of Units (SI)	1 V = 1,000 mV
volts	V	International System of Units (SI)	base unit for electric potential
kilovolts	kV	International System of Units (SI)	1,000 V = 1 kV

Power Units

Unit	Symbol	Measurement System	Description
nanowatts	nW	International System of Units (SI)	1 W = 1,000,000,000 nW
microwatts	μW	International System of Units (SI)	1 W = 1,000,000 μW
milliwatts	mW	International System of Units (SI)	1 W = 1,000 mW
watts	W	International System of Units (SI)	base unit for power
decawatts	daW	International System of Units (SI)	1 daW = 10 W
hectowatts	hW	International System of Units (SI)	1 hW = 100 W
kilowatts	kW	International System of Units (SI)	1 kW = 1,000 W
megawatts	MW	International System of Units (SI)	1 MW = 1,000,000 W
gigawatts	GW	International System of Units (SI)	1 GW = 1,000,000,000 W
terawatts	TW	International System of Units (SI)	1 TW = 1,000,000,000,000 W

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