Decibel-milliwatts (dBm) to Kilowatts (kW) 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.
Kilowatts
The kilowatt (kW) is a unit of power equal to exactly 1,000 watts and is the practical unit for household appliances, vehicle engines, and small industrial machinery. Electric kettles typically consume 2–3 kW; domestic air conditioners run at 1–5 kW; EV charging stations provide 7–22 kW for home use. Engine power in electric vehicles is specified in kilowatts globally, replacing the horsepower in official EU vehicle type approval documentation.
| Decibel-milliwatts (dBm) | Kilowatts (kW) |
|---|---|
| 0.1 dBm | 0.00000102 kW |
| 1 dBm | 0.00000126 kW |
| 2 dBm | 0.00000158 kW |
| 3 dBm | 0.000002 kW |
| 5 dBm | 0.00000316 kW |
| 10 dBm | 0.00001 kW |
| 20 dBm | 0.0001 kW |
| 30 dBm | 0.001 kW |
| 50 dBm | 0.10 kW |
| 100 dBm | 10,000.00 kW |
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.