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.

Max Pressure Pascals (Pa)

Required number input.

Maximum SPL from the microphone's maximum undistorted RMS sound pressure, referenced to 20 µPa. 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]

Max Spl Db (dB SPL)

The resulting max spl db returned as a number.

• Microphone sensitivity, SPL limit, directivity, and phantom-power calculations depend on frequency, load, reference pressure, weighting, polar pattern, preamplifier noise, distortion criterion, supply circuit, and acoustic environment.
• 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.

• SPL From Pressure

  Convert sound pressure to sound pressure level as splDb = 20 * log10(soundPressurePa / 0.00002) referenced to 20 micropascals.

• Mic Sensitivity mV/Pa

  Convert microphone sensitivity from dBV per pascal to millivolts per pascal as mvPerPa = 10^(sensitivityDbV / 20) * 1000, referenced to 1 V/Pa.

• Headphone Sensitivity DB

  Convert headphone sensitivity from dB SPL at 1 mW to dB SPL at 1 V RMS using nominal resistive impedance.