This tool converts a Current value in Amps (Ampere), mA, μA, nA to its equivalent Power value in dBm.

Enter

- Current (
**I**). Select units: A/mA/μA/nA/pA - Impedance (
**Z**). The default value is 50 ohm although it can be changed to any value

**Formula**

**P _{dBm} = 20*Log_{10}(I) + 10*Log_{10}(Z) + 30**

**Example Calculation**

For a current value of **1 Amp** and Impedance of **50 ohm**, the equivalent power **P _{dBm}** is

**47 dBm**.

For the same value of current and a resistance of **75 ohm**, **P _{dBm}** is

**48.75 dBm**.