| Note | Octave | Frequency (Hz) | Wavelength (M)* | Comment |
| C | 0 | 16.351 | 20.812m | |
| C# / Db | 0 | 17.324 | 19.643m | |
| D | 0 | 18.354 | 18.540m | |
| D# / Eb | 0 | 19.445 | 17.500m | |
| E | 0 | 20.601 | 16.518m | |
| F | 0 | 21.827 | 15.590m | |
| F# / Gb | 0 | 23.124 | 14.716m | |
| G | 0 | 24.499 | 13.890m | |
| G# / Ab | 0 | 25.956 | 13.110m | |
| A | 0 | 27.5 | 12.374m | Lowest Note of Piano |
| A# / Bb | 0 | 29.135 | 11.680m | |
| B | 0 | 30.868 | 11.024m | |
| C | 1 | 32.703 | 10.405m | |
| C# / Db | 1 | 34.648 | 9.821m | |
| D | 1 | 36.708 | 9.270m | |
| D# / Eb | 1 | 38.891 | 8.750m | |
| E | 1 | 41.203 | 8.259m | Lowest Note of Bass |
| F | 1 | 43.654 | 7.795m | |
| F# / Gb | 1 | 46.249 | 7.358m | |
| G | 1 | 48.999 | 6.945m | |
| G# / Ab | 1 | 51.913 | 6.555m | |
| A | 1 | 55 | 6.187m | |
| A# / Bb | 1 | 58.27 | 5.840m | |
| B | 1 | 61.735 | 5.512m | |
| C | 2 | 65.406 | 5.203m | |
| C# / Db | 2 | 69.296 | 4.911m | |
| D | 2 | 73.416 | 4.635m | |
| D# / Eb | 2 | 77.782 | 4.375m | |
| E | 2 | 82.407 | 4.129m | Lowest Note of Guitar |
| F | 2 | 87.307 | 3.898m | |
| F# / Gb | 2 | 92.499 | 3.679m | |
| G | 2 | 97.999 | 3.472m | |
| G# / Ab | 2 | 103.826 | 3.278m | |
| A | 2 | 110 | 3.094m | |
| A# / Bb | 2 | 116.541 | 2.920m | |
| B | 2 | 123.471 | 2.756m | |
| C | 3 | 130.813 | 2.601m | |
| C# / Db | 3 | 138.591 | 2.455m | |
| D | 3 | 146.832 | 2.318m | |
| D# / Eb | 3 | 155.563 | 2.187m | |
| E | 3 | 164.814 | 2.065m | |
| F | 3 | 174.614 | 1.949m | |
| F# / Gb | 3 | 184.997 | 1.839m | |
| G | 3 | 195.998 | 1.736m | Lowest note of violin |
| G# / Ab | 3 | 207.652 | 1.639m | |
| A | 3 | 220 | 1.547m | |
| A# / Bb | 3 | 233.082 | 1.460m | |
| B | 3 | 246.942 | 1.378m | |
| C | 4 | 261.626 | 1.301m | Middle C |
| C# / Db | 4 | 277.183 | 1.228m | |
| D | 4 | 293.665 | 1.159m | |
| D# / Eb | 4 | 311.127 | 1.094m | |
| E | 4 | 329.628 | 1.032m | |
| F | 4 | 349.228 | 0.974m | |
| F# / Gb | 4 | 369.994 | 0.920m | |
| G | 4 | 391.995 | 0.868m | |
| G# / Ab | 4 | 415.305 | 0.819m | |
| A | 4 | 440 | 0.773m | Tuning reference note |
| A# / Bb | 4 | 466.164 | 0.730m | |
| B | 4 | 493.883 | 0.689m | |
| C | 5 | 523.251 | 0.650m | |
| C# / Db | 5 | 554.365 | 0.614m | |
| D | 5 | 587.33 | 0.579m | |
| D# / Eb | 5 | 622.254 | 0.547m | |
| E | 5 | 659.255 | 0.516m | |
| F | 5 | 698.456 | 0.487m | |
| F# / Gb | 5 | 739.989 | 0.460m | |
| G | 5 | 783.991 | 0.434m | |
| G# / Ab | 5 | 830.609 | 0.410m | |
| A | 5 | 880 | 0.387m | |
| A# / Bb | 5 | 932.328 | 0.365m | |
| B | 5 | 987.767 | 0.345m | |
| C | 6 | 1046.502 | 0.325m | |
| C# / Db | 6 | 1108.731 | 0.307m | |
| D | 6 | 1174.659 | 0.290m | |
| D# / Eb | 6 | 1244.508 | 0.273m | |
| E | 6 | 1318.51 | 0.258m | |
| F | 6 | 1396.913 | 0.244m | |
| F# / Gb | 6 | 1479.978 | 0.230m | |
| G | 6 | 1567.982 | 0.217m | |
| G# / Ab | 6 | 1661.219 | 0.205m | |
| A | 6 | 1760 | 0.193m | |
| A# / Bb | 6 | 1864.655 | 0.182m | |
| B | 6 | 1975.533 | 0.172m | |
| C | 7 | 2093.005 | 0.163m | |
| C# / Db | 7 | 2217.461 | 0.153m | |
| D | 7 | 2349.318 | 0.145m | |
| D# / Eb | 7 | 2489.016 | 0.137m | |
| E | 7 | 2637.021 | 0.129m | |
| F | 7 | 2793.826 | 0.122m | |
| F# / Gb | 7 | 2959.955 | 0.115m | |
| G | 7 | 3135.964 | 0.109m | |
| G# / Ab | 7 | 3322.438 | 0.102m | |
| A | 7 | 3520 | 0.097m | |
| A# / Bb | 7 | 3729.31 | 0.091m | |
| B | 7 | 3951.066 | 0.086m | |
| C | 8 | 4186.009 | 0.081m | |
| C# / Db | 8 | 4434.922 | 0.077m | |
| D | 8 | 4698.636 | 0.072m | |
| D# / Eb | 8 | 4978.032 | 0.068m | |
| E | 8 | 5274.042 | 0.065m | |
| F | 8 | 5587.652 | 0.061m | |
| F# / Gb | 8 | 5919.91 | 0.057m | |
| G | 8 | 6271.928 | 0.054m | |
| G# / Ab | 8 | 6644.876 | 0.051m | |
| A | 8 | 7040 | 0.048m | |
| A# / Bb | 8 | 7458.62 | 0.046m | |
| B | 8 | 7902.132 | 0.043m | |
| C | 9 | 8372.018 | 0.041m | |
| C# / Db | 9 | 8869.844 | 0.038m | |
| D | 9 | 9397.272 | 0.036m | |
| D# / Eb | 9 | 9956.064 | 0.034m | |
| E | 9 | 10548.084 | 0.032m | |
| F | 9 | 11175.304 | 0.030m | |
| F# / Gb | 9 | 11839.82 | 0.029m | |
| G | 9 | 12543.856 | 0.027m | |
| G# / Ab | 9 | 13289.752 | 0.026m | |
| A | 9 | 14080 | 0.024m | |
| A# / Bb | 9 | 14917.24 | 0.023m | |
| B | 9 | 15804.264 | 0.022m |
Notes, Wavelength, and Frequency
Pitch ratios
| Ascending | Intervals | Descending | Intervals |
| Interval | Frequency Ratio | Interval | Frequency Ratio |
| unison | 1 : 1 | unison | 1 : 1 |
| m2 | 1 : 1.059 | minor 2nd | 1 : 0.943 |
| M2 | 1 : 1.122 | Major 2nd | 1 : 0.8909 |
| m3 | 1 : 1.189 | minor 3rd | 1 : 0.84 |
| M3 | 1 : 1.26 | Major 3rd | 1 : 0.7937 |
| P4 | 1 : 1.334 | Perfect 4th | 1 : 0.749 |
| aug4/dim5 | 1 : 1.4142 | augm 4th/dim 5th | 1 : 0.707 |
| P5 | 1 : 1.498 | Perfect 5th | 1 : 0.667 |
| m6 | 1 : 1.587 | minor 6th | 1 : 0.63 |
| M6 | 1 : 1.682 | Major 6th | 1 : 0.595 |
| m7 | 1 : 1.7818 | minor 7th | 1 : 0.561 |
| M7 | 1 : 1.887 | Major 7th | 1 : 0.530 |
| Octave | 1 : 2 | Octave | 1 : 0.5 |
For ascending intervals greater than an octave, multiply the INTEGER portion
of the Frequency ratio by 2 for each successive octave (1, 2, 4, 8, etc.)
Examples:
– a minor tenth up = 2.189
– 2 octaves + a tritone up = 4.4142
For descending intervals greater than an octave, divide the Freq. ratio by
2 (if between 1 and 2 octaves), by 4 (if between 2 & 3 octaves), and so on.
Examples:
– an octave plus a perfect 4th down = 0.3745 ( 0.749/2 )
– 2 octaves plus a minor 3rd down = 0.21 ( 0.84/4 )