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

Enter

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

Select the desired output unit of current – A/mA/μA/nA

**Formula**

**I = √(10 ^{(PdBm-30/10)}/Z**)

**Example Calculation**

1 dBm into a 50 ohm resistor gives a current of 5 mA. As the impedance decreases for a fixed value of power (in dBm), the current increases. At 1 ohm for instance, the current increases to 35 mA.

**Notes**

- 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.