Use this free online power converter to change watts into milliwatts instantly. Type in the watts value, and the equivalent milliwatts is calculated for you in real time.
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Watts
Milliwatts
How to use this Watts to Milliwatts Converter 🤔
Follow these steps to convert given Watts value from Watts units to Milliwatts units.
Enter the input Watts value in the text field.
The given Watts is converted to Milliwatts in realtime ⌚ using the formula, and displayed under the Milliwatts label.
You may copy the resulting Milliwatts value using the Copy button.
Formula
To convert given power from Watts to Milliwatts, use the following formula.
Milliwatts = Watts * 1e3
Calculation
Calculation will be done after you enter a valid input.
Watts to Milliwatts Conversion Table
The following table gives some of the most used conversions from Watts to Milliwatts.
Watts (W)
Milliwatts (mW)
0.01 W
10 mW
0.1 W
100 mW
1 W
1000 mW
2 W
2000 mW
3 W
3000 mW
4 W
4000 mW
5 W
5000 mW
6 W
6000 mW
7 W
7000 mW
8 W
8000 mW
9 W
9000 mW
10 W
10000 mW
20 W
20000 mW
50 W
50000 mW
100 W
100000 mW
1000 W
1000000 mW
Watts
The watt (W) is the SI unit of power, defined as one joule per second. It is used to measure the rate of energy transfer and is commonly used in a wide range of applications, including electricity, mechanics, and heating.
Milliwatts
A milliwatt (mW) is a unit of power equal to one thousandth of a watt. It is often used in contexts where power levels are low, such as in electronics and communications.
{
"conversion": "watt-milliwatt",
"x_slug": "watt",
"y_slug": "milliwatt",
"x": "W",
"y": "mW",
"x_desc": "Watts",
"y_desc": "Milliwatts",
"category": "Power",
"symbol": "m",
"formula": "x * 1e3",
"precision": 11,
"examples": "<div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">1</span>\n <h3 class=\"question\">Consider that a smartphone charger delivers 15 watts (W) of power.<br>Convert this power output from watts to Milliwatts.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The power in watts is:</p>\n <p class=\"step\"><span>Power<sub>(Watts)</sub></span> = 15</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert power from watts to milliwatts is:</p>\n <p class=\"formula step\"><span>Power<sub>(Milliwatts)</sub></span> = <span>Power<sub>(Watts)</sub></span> × 1e3</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Power<sub>(Watts)</sub> = 15</strong> in the above formula.</p>\n <p class=\"step\"><span>Power<sub>(Milliwatts)</sub></span> = <span>15</span> × 1e3</p>\n <p class=\"step\"><span>Power<sub>(Milliwatts)</sub></span> = 15000</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>15 W</strong> is equal to <strong>15000 mW</strong>.</p>\n <p>The power is <strong>15000 mW</strong>, in milliwatts.</p>\n </div>\n <div class=\"example\">\n <div class=\"example_head\"><span class=\"example_n\">2</span>\n <h3 class=\"question\">Consider that a laptop uses 65 watts (W) of power while charging.<br>Convert this power usage from watts to Milliwatts.</h3></div>\n <h4 class=\"answer\">Answer:</h4>\n <p><strong>Given:</strong></p>\n <p>The power in watts is:</p>\n <p class=\"step\"><span>Power<sub>(Watts)</sub></span> = 65</p>\n <p><strong>Formula:</strong></p>\n <p>The formula to convert power from watts to milliwatts is:</p>\n <p class=\"formula step\"><span>Power<sub>(Milliwatts)</sub></span> = <span>Power<sub>(Watts)</sub></span> × 1e3</p>\n <p><strong>Substitution:</strong></p>\n <p>Substitute given weight <strong>Power<sub>(Watts)</sub> = 65</strong> in the above formula.</p>\n <p class=\"step\"><span>Power<sub>(Milliwatts)</sub></span> = <span>65</span> × 1e3</p>\n <p class=\"step\"><span>Power<sub>(Milliwatts)</sub></span> = 65000</p>\n <p><strong>Final Answer:</strong></p>\n <p>Therefore, <strong>65 W</strong> is equal to <strong>65000 mW</strong>.</p>\n <p>The power is <strong>65000 mW</strong>, in milliwatts.</p>\n </div>\n ",
"img": "<img class=\"conversion\" src=\"/images/unit/power/watt-milliwatt.webp\" height=\"360\" width=\"640\" alt=\"Watts to Milliwatts Converter | W to mW\" />",
"table1n": "<h2><span class=\"x\">Watts</span> to <span class=\"y\">Milliwatts</span> Conversion Table</h2><p>The following table gives some of the most used conversions from Watts to Milliwatts.</p><table><thead><tr><th scope=\"column\" role=\"columnheader\">Watts (<span class=\"unit\">W</span>)</th><th scope=\"column\" role=\"columnheader\">Milliwatts (<span class=\"unit\">mW</span>)</th><tr></thead><tbody><tr><td>0.01 <span class=\"unit\">W</span></td><td>10 <span class=\"unit\">mW</span></td></tr><tr><td>0.1 <span class=\"unit\">W</span></td><td>100 <span class=\"unit\">mW</span></td></tr><tr><td>1 <span class=\"unit\">W</span></td><td>1000 <span class=\"unit\">mW</span></td></tr><tr><td>2 <span class=\"unit\">W</span></td><td>2000 <span class=\"unit\">mW</span></td></tr><tr><td>3 <span class=\"unit\">W</span></td><td>3000 <span class=\"unit\">mW</span></td></tr><tr><td>4 <span class=\"unit\">W</span></td><td>4000 <span class=\"unit\">mW</span></td></tr><tr><td>5 <span class=\"unit\">W</span></td><td>5000 <span class=\"unit\">mW</span></td></tr><tr><td>6 <span class=\"unit\">W</span></td><td>6000 <span class=\"unit\">mW</span></td></tr><tr><td>7 <span class=\"unit\">W</span></td><td>7000 <span class=\"unit\">mW</span></td></tr><tr><td>8 <span class=\"unit\">W</span></td><td>8000 <span class=\"unit\">mW</span></td></tr><tr><td>9 <span class=\"unit\">W</span></td><td>9000 <span class=\"unit\">mW</span></td></tr><tr><td>10 <span class=\"unit\">W</span></td><td>10000 <span class=\"unit\">mW</span></td></tr><tr><td>20 <span class=\"unit\">W</span></td><td>20000 <span class=\"unit\">mW</span></td></tr><tr><td>50 <span class=\"unit\">W</span></td><td>50000 <span class=\"unit\">mW</span></td></tr><tr><td>100 <span class=\"unit\">W</span></td><td>100000 <span class=\"unit\">mW</span></td></tr><tr><td>1000 <span class=\"unit\">W</span></td><td>1000000 <span class=\"unit\">mW</span></td></tr></table>",
"units": [
[
"milliwatt",
"Milliwatts",
"mW"
],
[
"watt",
"Watts",
"W"
],
[
"kilowatt",
"Kilowatts",
"kW"
],
[
"megawatt",
"Megawatts",
"MW"
],
[
"gigawatt",
"Gigawatts",
"GW"
],
[
"decibel_milliwatt",
"Decibel-milliwatts",
"dBm"
],
[
"decibel_watt",
"Decibel-watts",
"dBW"
],
[
"horsepower_mechanic",
"Horsepower (Mechanic)",
"hp(I)"
],
[
"horsepower_electric",
"Horsepower (Electric)",
"hp(E)"
],
[
"btu_hr",
"BTU/hr",
"BTU/hr"
]
],
"y_long_desc": "A milliwatt (mW) is a unit of power equal to one thousandth of a watt. It is often used in contexts where power levels are low, such as in electronics and communications.",
"x_long_desc": "The watt (W) is the SI unit of power, defined as one joule per second. It is used to measure the rate of energy transfer and is commonly used in a wide range of applications, including electricity, mechanics, and heating."
}
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