Voltage Gain Calculator

The gain of an amplifier is nothing but the ratio of output to the input value. The voltage gain of an amplifier is the ratio corresponding to the output voltage to the input. This calculator calculates the voltage gain of an amplifier.

Enter output voltage and input voltage to calculate the voltage gain


  • Gain
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Amplifier has the ability to increase the magnitude of an input signal, it is useful to be able to rate an amplifier’s amplifying ability in terms of an output/input ratio. The technical term for an amplifier’s output/input magnitude ratio is gain. As a ratio of equal units (power out / power in, voltage out / voltage in, or current out / current in), gain is naturally a unitless measurement.