0 dBm to Watts
0 dBm equals exactly 1 milliwatt (0.001 W).
How to use this tool
- Enter power level in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your power and the full breakdown beneath it.
0 dBm is the reference level in RF engineering and equals 1 mW into a 50 Ω load.
Frequently asked questions
- What is a typical Wi-Fi signal strength in dBm?
- -30 dBm is excellent (very close to the access point). -70 dBm is usable. Below -80 dBm connections become unreliable.
- What is the difference between dBm and dBW?
- Both are logarithmic power units. dBm references 1 mW; dBW references 1 W. dBW = dBm − 30. A 1 W transmitter is 30 dBm or 0 dBW.