Decibel-milliwatts (dBm) to Megawatts (MW) Conversion
Decibel-milliwatts
The decibel-milliwatt (dBm) is a unit of power expressed on a logarithmic scale relative to one milliwatt (1 mW). It is defined as dBm = 10 × log₁₀(P / 1 mW), where P is power in milliwatts. Used universally in RF engineering, telecommunications, and audio systems: Wi-Fi signal strength is expressed in dBm (typical values −30 to −90 dBm); a 0 dBm signal equals 1 mW; 30 dBm equals 1 W; −10 dBm equals 0.1 mW. Note: dBm cannot be converted with a simple multiplier — it requires the logarithmic formula.
Megawatts
The megawatt (MW) is a unit of power equal to exactly 1,000,000 watts (1,000 kW), the standard scale for power plant output and large industrial consumers. A large wind turbine generates 2–15 MW; a typical nuclear reactor unit produces 1,000–1,600 MW (1–1.6 GW); a small hydroelectric dam might produce 10–100 MW. Data centres for large cloud providers can consume 100–500 MW of continuous power.
| Decibel-milliwatts (dBm) | Megawatts (MW) |
|---|---|
| 0.1 dBm | 1.0232929922808E-9 MW |
| 1 dBm | 1.2589254117942E-9 MW |
| 2 dBm | 1.5848931924611E-9 MW |
| 3 dBm | 1.9952623149689E-9 MW |
| 5 dBm | 3.1622776601684E-9 MW |
| 10 dBm | 1.0E-8 MW |
| 20 dBm | 1.0E-7 MW |
| 30 dBm | 1.0E-6 MW |
| 50 dBm | 0.0001 MW |
| 100 dBm | 10 MW |
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All conversion factors are sourced from NIST (National Institute of Standards and Technology) and ISO 80000 international standards. They are exact where the standard defines them as exact.