Skip to main content
Biamp Cornerstone

Octave bandwidth to Q conversion chart

  1. Last updated
  2. Save as PDF

Occasionally, we may need to convert parametric EQ settings from Octave Bandwidth to Q (Quality).

This simple conversion chart will help guide you. It is based on 1/12-th octave centers. You may have to round up or down slightly.

Bandwidth (Octaves) Q Factor   Bandwidth (Octaves) Q Factor
0.08 17.31   1.58 0.87
0.17 8.65   1.67 0.82
0.25 5.76   1.75 0.78
0.33 4.32   1.83 0.74
0.42 3.45   1.92 0.70
0.50 2.87   2.00 0.67
0.58 2.46   2.08 0.64
0.67 2.14   2.17 0.61
0.75 1.90   2.25 0.58
0.83 1.71   2.33 0.56
0.92 1.55   2.42 0.53
1.00 1.41   2.50 0.51
1.08 1.30   2.58 0.49
1.17 1.20   2.67 0.47
1.25 1.12   2.75 0.45
1.33 1.04   2.83 0.44
1.42 0.98   2.92 0.42
1.50 0.92   3.00 0.40