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Voltage Gain Calculator

Compute voltage gain G = 20·log₁₀(Vout/Vin) in decibels.

Input Data

Input Input Vᵢₙ.
V
Input Output Vₒᵤₜ.
V

Results

20dB
Voltage gain G = 20·log₁₀(Vout/Vin).

At a glance:Voltage Gain Calculator: enter parameters to compute results; complements related calculators.

Formula

G(dB) = 20 · log₁₀(Vout / Vin).

How to Use

  1. Enter Vin, Vout.
  2. It returns voltage gain (dB).

Case Studies

10× voltage → +20 dB

Every 10× voltage is +20 dB.

FAQ

vs power gain?

Power gain uses 10·log₁₀ (power ∝ V²), hence 10 dB per decade.

Related Tools

References

Content review: Calculatorism Science Team. Formula and numeric tests verified; results for reference only.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Voltage Gain Calculator/signal/voltage-gain-db)。