Acoustic calculations, simple and fast

Pick a tool below to start a calculation. Free, instant, no signup.

dB calculator logo

Addition & Subtraction of dB levels

Add or subtract sound levels in dB/dBA.

Distance decay calculator logo

Distance attenuation

Estimate level loss over distance.

Octave band converter logo

Third-octave → octave

Convert a 1/3-octave Lp spectrum to octave bands.