dBV to dBu Calculator

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This tool converts from dBV to dBu.

dBu to dBV

Formula

dBu = dBV + 2.21

V = 10(dBV/20)

Background

dBu and dBV are decibel units corresponding to voltage.

  • dBu is dB relative to 0.775 volt
  • dBV is dB relative to 1.0 volt