Convert power levels from decibels per watt (dBW) to decibels per milliwatt (dBm) using this calculator.
Learn how to use the DecibelWatt to Decibelmilliwatt Converter calculator and its working principles
The conversion from dBW to dBm is based on the relationship between watts and milliwatts. Since 1 milliwatt is equal to 0.001 watts, adding 30 to the dBW value gives the equivalent dBm value. This is because a 10 dB increase corresponds to a tenfold increase in power, and since 1 watt is 1000 milliwatts, an additional 30 dB is needed to account for the milliwatt scale.
If you have a power level of 5 dBW, the equivalent in dBm would be:
dBm = 5 dBW + 30 = 35 dBm