Power Gain in dB Calculator

Decibel gain is the measure of the ability of two port circuit to raise the power of the signal from input to the output. It is also referred as Amplifier gain. It is about expressing the gain of an active device (amplifier) or loss of a passive device(length of a cable). Use our online power gain in dB calculator to find the Decibel relative power by providing the power levels (P1, P2).


Result :

Amplifier’s gain or Decibel gain is the ratio of output over input. To put it simply, it's a voltage at the output to the voltage at the input. It is expressed in logarithmic form. The power gain in dB calculator estimates the relative power of the circuit.