The two calculators below convert power and voltage gain to a dB (deciBel) value.
Power Gain to dB
Formula
GdB = 10*log10(Pout/Pin)
Voltage Gain to dB
Formula
GdB = 20*log10(Vout/Vin)
This assumes the input and output impedance is the same.
The two calculators below convert power and voltage gain to a dB (deciBel) value.
GdB = 10*log10(Pout/Pin)
GdB = 20*log10(Vout/Vin)
This assumes the input and output impedance is the same.