How long to make your didgeridoo to get the note you want
Didgeridoo lengths in cm
    Octave*
    -4 -3 -2 -1 0 1
N
o
t
e
A 625.9 311.5 154.3 75.7 36.4 16.8
A# 590.6 293.9 145.5 71.3 34.2 15.7
B 557.3 277.2 137.2 67.2 32.2 14.7
C 525.9 261.5 129.3 63.2 30.2 13.7
C# 496.2 246.7 121.9 59.5 28.3 12.7
D 468.2 232.7 114.9 56.0 26.6 11.9
D# 441.8 219.5 108.3 52.7 24.9 11.0
E 416.8 207.0 102.1 49.6 23.4 10.3
F 393.3 195.2 96.2 46.7 21.9 9.5
F# 371.0 184.1 90.6 43.9 20.5 8.8
G 350.0 173.6 85.4 41.3 19.2 8.2
G# 330.2 163.7 80.4 38.8 18.0 7.6
Didgeridoo lengths in inches
    Octave*
    -4 -3 -2 -1 0 1
N
o
t
e
A 246.4 122.7 60.8 29.8 14.3 6.6
A# 232.5 115.7 57.3 28.1 13.5 6.2
B 219.4 109.1 54.0 26.4 12.7 5.8
C 207.0 103.0 50.9 24.9 11.9 5.4
C# 195.4 97.1 48.0 23.4 11.2 5.0
D 184.3 91.6 45.2 22.1 10.5 4.7
D# 173.9 86.4 42.6 20.8 9.8 4.3
E 164.1 81.5 40.2 19.5 9.2 4.0
F 154.8 76.9 37.9 18.4 8.6 3.8
F# 146.1 72.5 35.7 17.3 8.1 3.5
G 137.8 68.3 33.6 16.2 7.6 3.2
G# 130.0 64.4 31.7 15.3 7.1 3.0
Parameters
Pipe width (cm) 4.75
Estimate of air temp (C) 25
Note on octaves
*0 codes for the octave containing middle C; -1 the octave below; +1 the octave above; etc.