dB to Volts

Enter any value and then press "Calculate" to find out the equivalent values in volts, dBV, or dBu.

Volts, dBV, and dBu are three units describing voltage levels that are used interchangeably in professional audio based on the point of reference. This audio tools provides a quick and convenient means to convert between them. dBV refers to a voltage magnitude referenced to 1 volt, while dBu is referenced to 0.775 volts.

  • dBV = dBu - 2.21
  • Volts = 10(dBu / 20) x 0.775
  • dBu = dBV + 2.21
  • Volts = 10(dBV/20)
  • dBu = 20 log (Volts/0.775)
  • dBV = 20 log (Volts)