Milliwatts to watts converter
Watts (W)
1 milliwatt = 0.001 watts
How to convert milliwatts to watts
W = mW × 0.001
Multiply the number of milliwatts by 0.001 to get watts. Going the other way, divide by 0.001 (or multiply by 1000).
One milliwatt is exactly defined as 0.001 watts (to 12 significant figures), and one watt is 1000 milliwatts.
Worked examples
- Convert 5 milliwatts: 5 × 0.001 = 0.005 0.005 watts.
- Convert 12.5 milliwatts: 12.5 × 0.001 = 0.0125 0.0125 watts.
- Convert 250 milliwatts: 250 × 0.001 = 0.25 0.25 watts.
Quick-reference table
| mW | W |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 15 | 0.015 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 75 | 0.075 |
| 100 | 0.1 |
| 1,000 | 1 |
| W | mW |
|---|---|
| 1 | 1,000 |
| 2 | 2,000 |
| 3 | 3,000 |
| 5 | 5,000 |
| 10 | 10,000 |
| 15 | 15,000 |
| 20 | 20,000 |
| 25 | 25,000 |
| 50 | 50,000 |
| 75 | 75,000 |
| 100 | 100,000 |
| 1,000 | 1,000,000 |
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Frequently asked questions
How many watts are in 1 milliwatt?
1 milliwatt equals 0.001 watts.
What is the formula to convert milliwatts to watts?
Use W = mW × 0.001. Multiply the number of milliwatts by 0.001 to get watts. Going the other way, divide by 0.001 (or multiply by 1000).
What is 100 milliwatts in watts?
100 milliwatts is 0.1 watts.