Convert watt to milliwatt
Here you can quickly calculate how many milliwatt fit in one watt.
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- 1 W = 1000 mW
- 1 mW = 0.001 W
Example: watt to milliwatt
- 1 watt = 1000 milliwatt
Watt to milliwatt conversion table
| watt | milliwatt |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
Watt to milliwatt formula
To convert watt to milliwatt, multiply by 1000.
1 W = 1000 mW
Example: 1 watt = 1000 milliwatt
Common power conversion mistakes
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'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.
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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.
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'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 watt and milliwatt conversion quiz
Score:
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129 milliwatt equals 0.194 watt.
Correct answer: 129 milliwatt = 0.129 watt.
152 milliwatt equals 0.152 watt.
Correct answer: 152 milliwatt = 0.152 watt.
19.3 milliwatt equals 0.0193 watt.
Correct answer: 19.3 milliwatt = 0.0193 watt.
5.1 watt equals 5.1e+3 milliwatt.
Correct answer: 5.1 watt = 5.1e+3 milliwatt.
130 watt equals 1.3e+5 milliwatt.
Correct answer: 130 watt = 1.3e+5 milliwatt.