Convert watts to milliwatts
Watts to milliwatts. Enter a value to convert, or use the watts to milliwatts chart further down the page.
1 watt equals 1,000 milliwatts. Going the other way, 1 milliwatt = 0.001 watts.
How to convert watts to milliwatts
To convert watts to milliwatts, multiply the watt value by 1000. You can also divide by 0.001 to get the same answer.
mW = W × 1000
Worked example
Convert 15 W to milliwatts:
15 W = 15,000 mW
watts to milliwatts conversion chart
Use this watts to milliwatts table for quick reference without typing anything.
| watts (W) | milliwatts (mW) |
|---|---|
| 0.01 W | 10 mW |
| 0.1 W | 100 mW |
| 1 W | 1,000 mW |
| 2 W | 2,000 mW |
| 3 W | 3,000 mW |
| 5 W | 5,000 mW |
| 10 W | 10,000 mW |
| 20 W | 20,000 mW |
| 50 W | 50,000 mW |
| 100 W | 100,000 mW |
| 1,000 W | 1,000,000 mW |
What is a watt?
The watt is the SI unit of power: one joule per second.
What is a milliwatt?
The milliwatt (mW) is a unit of power equal to 0.001 watts.
Frequently asked questions
How many milliwatts are in a watt?
1 watts equals 1,000 milliwatts. Going the other way, 1 milliwatts is 0.001 watts.
How do you convert watts to milliwatts?
To convert watts to milliwatts, multiply the watt value by 1000. You can also divide by 0.001 to get the same answer.
What is 10 watts in milliwatts?
10 watts equals 10,000 milliwatts. The conversion chart on this page lists the other values people look up most often.
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Convert watts to other units
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