Conversion ... voltage gain or attenuation to decibel (dBV).

Conversion from gain or attenuation in V to dB

It converts a voltage difference in the corrisponding dB value of gain or attenuation.

Data input

Initial voltage value . . . . . IN

V

Final voltage value . . . OUT

V

Wait calculate

Results
Voltage ratio
Gain dB

Notes.
You can use any measure unit of power but it must be the same for the two inserted numbers.

Some reference levels :

Others :