Enter the sound pressure and reference pressure into the calculator to determine the sound pressure level, also known as dB level.

## Sound Pressure Level Formula

The following equation is used to calculate a sound pressure level.

dB = 10 * log ( p^2 / pr^2)

- Where dB is the sound pressure in decibels
- P is the sound pressure (pascals)
- pr is the reference pressure (pascals)

## FAQ

**What is a sound pressure level?**

A sound pressure level is a pressure wave caused by a differential in pressure produces by sound waves.

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