Amplifier Calculator
Calculate amplifier voltage gain, current gain, power gain, and decibel (dB) values.
Gain Type
Av = Vout/Vin | dB = 20log(Av)
Amplifier Gain
100.00
Voltage Gain (Av)
40.00
Voltage Gain (dB)
10000.00
Power Gain (Ap)
80.00
Power Gain (dB)
Gain Formulas
Voltage Gain: Av = Vout / Vin
Current Gain: Ai = Iout / Iin
Power Gain: Ap = Pout / Pin
dB (V/I): 20 x log10(gain)
dB (Power): 10 x log10(gain)
Common dB Values
3 dB = 2x power
6 dB = 2x voltage
10 dB = 10x power
20 dB = 10x voltage
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.