dBm to Watts Calculations

1. mW to dBm = 10Log₁₀(Watts) + 30
2. dBm to mW = 10(dBm/10)

milliWatts to dBm (and vice versa)

Power in milliWatts to dBm (and vice versa) . Enter the 'Transmit Power' (A or G above) in milliWatts OR the 'Power Ratio' in dBm and click the appropriate 'Calculate' button. 1 Watt = 1000 milliWatts. Calculations and equations used. Transmit Power   Result mW  dBm Power Ratio   Result  dBm  mW