Milliwatts to Watts Converter
Convert milliwatts (mW) to watts (W), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a power, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 mW = 0.001 W
- 1 × 0.001 = 0.001 W
How to convert milliwatts to watts
1 mW = 0.001 W, so multiply by 0.001 to go from milliwatts to watts. Going the other way, 1 W = 1,000 mW.
W = mW × 0.001 mW = W × 1,000
Worked example:
1 mW = 0.001 W 5 × 0.001 = 0.005 W
Milliwatts to watts table
| Milliwatts | Watts |
|---|---|
| 1 mW | 0.001 W |
| 2 mW | 0.002 W |
| 3 mW | 0.003 W |
| 4 mW | 0.004 W |
| 5 mW | 0.005 W |
| 6 mW | 0.006 W |
| 7 mW | 0.007 W |
| 8 mW | 0.008 W |
| 9 mW | 0.009 W |
| 10 mW | 0.01 W |
| 15 mW | 0.015 W |
| 20 mW | 0.02 W |
| 25 mW | 0.025 W |
| 30 mW | 0.03 W |
| 40 mW | 0.04 W |
| 50 mW | 0.05 W |
| 75 mW | 0.075 W |
| 100 mW | 0.1 W |
| 250 mW | 0.25 W |
| 500 mW | 0.5 W |
| 1000 mW | 1 W |
About the units
- Milliwatts (mW)
- Milliwatts, a metric unit. Definition: BIPM SI Brochure (SI prefixes).
- Watts (W)
- Watts, a metric unit. Definition: BIPM SI Brochure.