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Megawatts (MW) to Decibel-milliwatts (dBm) Conversion

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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

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.