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Convert milliwatt to watt

Here you can quickly calculate how many watt fit in one milliwatt.
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  • 1 mW = 0.001 W
  • 1 W = 1000 mW

Example: milliwatt to watt

  • 1 milliwatt = 0.001 watt

Milliwatt to watt conversion table

milliwatt watt
1 0.001
2 0.002
5 0.005
10 0.01
20 0.02
50 0.05
100 0.1

Milliwatt to watt formula

To convert milliwatt to watt, divide by 1000.

1 mW = 0.001 W
Example: 1 milliwatt = 0.001 watt

Common power conversion mistakes

  • 'Kilowatts per hour' is a common slip of the tongue, power is measured in plain kilowatts. The kilowatt-hour (kWh) is energy: power multiplied by time. A machine draws 3 kW, and uses 3 kWh in one hour.
  • American air conditioners are rated in BTU/h, European ones in watts, 1 kW is about 3,412 BTU/h. A '9,000 BTU' unit is therefore about 2.6 kW. Divide BTU/h by 3,412 to get kilowatts.
  • 'Calories burned per hour' is a power figure, not an amount of energy: 1 kcal/h is about 1.16 W. A run that burns 600 kcal in an hour corresponds to an average output of about 700 W.

Quick milliwatt and watt conversion quiz

Score: 0

43 watt equals 86 000 milliwatt.

Correct answer: 43 watt = 43 000 milliwatt.

0.2 milliwatt equals 0.0004 watt.

Correct answer: 0.2 milliwatt = 0.0002 watt.

14.7 milliwatt equals 0.0147 watt.

Correct answer: 14.7 milliwatt = 0.0147 watt.

11.4 milliwatt equals 0.0114 watt.

Correct answer: 11.4 milliwatt = 0.0114 watt.

242 watt equals 242 000 milliwatt.

Correct answer: 242 watt = 242 000 milliwatt.

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