Sound Pressure Level (SPL) Calculator

Inverse Square Law- When you double the distance, there will be a 6db loss in SPL
Meters 1 2 4 8 16 32 64 128 256 512 1024 2048
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Feet 3.3 6.6 13.2 26.4 52.8 105.6 211.2 422.4 844.8 1689.6 3379.2 6758.4

 

Enter starting SPL at 1 meter: Enter distance (in feet) to determine loss:
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Double the Power Rule-When you double the power, there will be a 3db gain in SPL
Wattage 0.5 1 2 4 8 16 32 64 128 256 512 1024
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