Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Voltage RMS

Required number input.

Convert a signal level in volts RMS to dBu using the 0 dBu reference of 0.7746 V. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Level

The resulting level returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• dBu To Volts

  Convert a signal level in dBu to volts RMS using the 0 dBu reference of 0.7746 V.

• dBV To Volts

  Convert a signal level in dBV to volts RMS using the 0 dBV reference of 1 V.

• Volts To dBV

  Convert a signal level in volts RMS to dBV relative to the 0 dBV reference of 1 V.