dBm to Current (Amps) Calculator

This tool converts a Power value in dBm to its equivalent Current in Amps or Amperes.


  • Power in dBm (PdBm)
  • Impedance (Z). The default value is 50 ohm although it can be changed to any value

Select the desired units of current – A/mA/μA/nA

Amps to dBm


I = √(10(PdBm-30/10)/Z)

Example Calculation


  1. Amp is often used as a short form of Amperes – a unit of current. If you would like to convert PdBm to Amplitude instead, use this calculator.