Reply To: W to dB 11th February 2010 at 14:39 #60974 malumeTGuest Power in dBm is compared to power of 1mW (1mW = (1/1000)W) To convert 2W to dBm will be: P= 10log(2W/1mW)= 10log(2000/1) = (10*3.3)dBm = 33dBm NB: log is in base 10