dBu / dBV Calculator

Fast, browser‑only utility for audio levels. Converts between voltage and dBu/dBV, and computes level difference between two voltages. Assumes RMS voltages.

Voltage → dBu / dBV

dBu
dBV
Quick set:

Formulas: dBu = 20·log₁₀(V/0.775)   |   dBV = 20·log₁₀(V/1.0)

dBu / dBV → Voltage

Voltage

Voltage from dBu: V = 0.775·10^(dBu/20)   |   from dBV: V = 1.0·10^(dBV/20)

Level Difference (Two Voltages)

Δ Level (dB)
Ratio (V₂/V₁)
Examples:

Formula: ΔdB = 20·log₁₀(V₂/V₁). Positive means B is higher than A.