The dBm to dBW converter allows you to transform a value expressed in dBm (decibels per milliwatt) into dBW (decibels per watt).
This tool is useful for RF engineers and technicians who work on the design and analysis of radio systems.
Formula used
dBW = dBm – 30
Explanation
The conversion between dBm and dBW is direct: we subtract 30 dB from the value in dBm to obtain the equivalent value in dBW.
This operation takes into account the fact that 1 W = 1000 mW, and that 10 × log10(1000) = 30 dB.
Calculation example
If the power is 45 dBm , the conversion to dBW is done as follows:
dBW = 45 – 30 = 15 dBW
Benefits and Use
- Allows you to easily compare powers expressed in dBm and dBW.
- Useful for the design and sizing of RF systems.
- Helps check component compatibility and transmitted power in different circuits.
