Convert Megawatts to Milliwatts
1 megawatt (MW) equals 1000000000 milliwatts (mW).
1 MW = 1000000000 mW
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megawatt to milliwatt converter to paste a column from Excel.
How to Convert Megawatt to Milliwatt
- 1 MW = 1000000000 mW
- 1 mW = 1 × 10⁻⁹ MW
- Example: convert 15 MW to mW: 15 MW = 15 × 1000000000 mW = 15000000000 mW
Formula
mW = MW × 1000000000
Derivation from SI units:
- 1 MW = 10⁶ W
- 1 mW = 10⁻³ W
- 1 MW = 1000000 W ÷ 0.001 W per mW = 1000000000 mW
Both units are defined exactly, so the factor is exact. Megawatt definition: megawatt; Milliwatt definition: milliwatt.
Worked examples
- A reading of 3 MW converts to 3000000000 mW.
3 MW × 1000000000 = 3000000000 mW - A value of 50 MW is 50000000000 mW.
50 MW × 1000000000 = 50000000000 mW
Megawatt to Milliwatt conversion table
| Megawatts (MW) | Milliwatts (mW) |
|---|---|
| 0.5 MW | 500000000 mW |
| 1 MW | 1000000000 mW |
| 2 MW | 2000000000 mW |
| 3 MW | 3000000000 mW |
| 5 MW | 5000000000 mW |
| 10 MW | 10000000000 mW |
| 50 MW | 50000000000 mW |
| 100 MW | 100000000000 mW |
| 500 MW | 500000000000 mW |
| 1000 MW | 1000000000000 mW |
Where it's used
Megawatts are used for wind turbines (2–15 MW), while milliwatts appear in laser pointer and diode output. Both measure power (energy per unit time), so the conversion is a fixed factor.
Megawatt to other power units
| Conversion | 1 MW equals |
|---|---|
| megawatt to watt | 1000000 W |
| megawatt to milliwatt | 1000000000 mW |
| megawatt to kilowatt | 1000 kW |
| megawatt to horsepower | 1341.02209 hp |
| megawatt to metric horsepower | 1359.621617 PS |
| megawatt to BTU per hour | 3412141.633 BTU/h |
| megawatt to refrigeration ton | 284.3451361 TR |
| megawatt to kilocalorie per hour | 859845.2279 kcal/h |
| megawatt to foot-pound per second | 737562.1493 ft·lbf/s |
Frequently asked questions
How many milliwatts are in 1 megawatt?
1 MW = 1000000000 mW.
How do I convert megawatts to milliwatts?
Multiply the value in MW by 1000000000. For example, 15 MW × 1000000000 = 15000000000 mW.
Is the MW to mW conversion exact?
Yes. Both units are defined exactly, and 1 MW is exactly 1000000000 mW.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Megawatts to Milliwatts. Retrieved October 17, 2026, from https://scientificconverters.com/power/megawatts-to-milliwatts/
IEEE
Scientific Converters, "Convert Megawatts to Milliwatts," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/power/megawatts-to-milliwatts/