Decibel-milliwatts (dBm) to Gigawatts (GW) 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.
Gigawatts
The gigawatt (GW) is a unit of power equal to exactly 1,000,000,000 watts (10⁹ W), the scale of national electrical grids and large-scale power generation. The total installed electricity generation capacity of France is approximately 130 GW; that of the United States exceeds 1,100 GW. A lightning bolt peaks at around 1 TW for microseconds. The rapid growth of solar and wind power is often described in gigawatts of installed capacity added per year.
| Decibel-milliwatts (dBm) | Gigawatts (GW) |
|---|---|
| 0.1 dBm | 0.00000000000102 GW |
| 1 dBm | 0.00000000000126 GW |
| 2 dBm | 0.00000000000158 GW |
| 3 dBm | 0.000000000002 GW |
| 5 dBm | 0.00000000000316 GW |
| 10 dBm | 0.00000000001 GW |
| 20 dBm | 0.0000000001 GW |
| 30 dBm | 0.000000001 GW |
| 50 dBm | 0.0000001 GW |
| 100 dBm | 0.01 GW |
Frequently Asked Questions (FAQ)
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How accurate are the conversion values?
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.