A reference table showing MIDI octaves, note numbers, frequencies and names for the musical notes in the diatonic scale.
| MIDI Octave | MIDI Note Number | Note Name | Frequency Hz |
|---|---|---|---|
| -1 | 0 | C | 8.18 |
| -1 | 1 | C♯/D♭ | 8.66 |
| -1 | 2 | D | 9.18 |
| -1 | 3 | D♯/E♭ | 9.72 |
| -1 | 4 | E | 10.3 |
| -1 | 5 | F | 10.91 |
| -1 | 6 | F♯/G♭ | 11.56 |
| -1 | 7 | G | 12.25 |
| -1 | 8 | G♯/A♭ | 12.98 |
| -1 | 9 | A | 13.75 |
| -1 | 10 | A♯/B♭ | 14.57 |
| -1 | 11 | B | 15.43 |
| 0 | 12 | C | 16.35 |
| 0 | 13 | C♯/D♭ | 17.32 |
| 0 | 14 | D | 18.35 |
| 0 | 15 | D♯/E♭ | 19.45 |
| 0 | 16 | E | 20.6 |
| 0 | 17 | F | 21.83 |
| 0 | 18 | F♯/G♭ | 23.12 |
| 0 | 19 | G | 24.5 |
| 0 | 20 | G♯/A♭ | 25.96 |
| 0 | 21 | A | 27.5 |
| 0 | 22 | A♯/B♭ | 29.14 |
| 0 | 23 | B | 30.87 |
| 1 | 24 | C | 32.7 |
| 1 | 25 | C♯/D♭ | 34.65 |
| 1 | 26 | D | 36.71 |
| 1 | 27 | D♯/E♭ | 38.89 |
| 1 | 28 | E | 41.2 |
| 1 | 29 | F | 43.65 |
| 1 | 30 | F♯/G♭ | 46.25 |
| 1 | 31 | G | 49.0 |
| 1 | 32 | G♯/A♭ | 51.91 |
| 1 | 33 | A | 55.0 |
| 1 | 34 | A♯/B♭ | 58.27 |
| 1 | 35 | B | 61.74 |
| 2 | 36 | C | 65.41 |
| 2 | 37 | C♯/D♭ | 69.3 |
| 2 | 38 | D | 73.42 |
| 2 | 39 | D♯/E♭ | 77.78 |
| 2 | 40 | E | 82.41 |
| 2 | 41 | F | 87.31 |
| 2 | 42 | F♯/G♭ | 92.5 |
| 2 | 43 | G | 98.0 |
| 2 | 44 | G♯/A♭ | 103.83 |
| 2 | 45 | A | 110.0 |
| 2 | 46 | A♯/B♭ | 116.54 |
| 2 | 47 | B | 123.47 |
| 3 | 48 | C | 130.81 |
| 3 | 49 | C♯/D♭ | 138.59 |
| 3 | 50 | D | 146.83 |
| 3 | 51 | D♯/E♭ | 155.56 |
| 3 | 52 | E | 164.81 |
| 3 | 53 | F | 174.61 |
| 3 | 54 | F♯/G♭ | 185.0 |
| 3 | 55 | G | 196.0 |
| 3 | 56 | G♯/A♭ | 207.65 |
| 3 | 57 | A | 220.0 |
| 3 | 58 | A♯/B♭ | 233.08 |
| 3 | 59 | B | 246.94 |
| 4 | 60 | C | 261.63 |
| 4 | 61 | C♯/D♭ | 277.18 |
| 4 | 62 | D | 293.66 |
| 4 | 63 | D♯/E♭ | 311.13 |
| 4 | 64 | E | 329.63 |
| 4 | 65 | F | 349.23 |
| 4 | 66 | F♯/G♭ | 369.99 |
| 4 | 67 | G | 392.0 |
| 4 | 68 | G♯/A♭ | 415.3 |
| 4 | 69 | A | 440.0 |
| 4 | 70 | A♯/B♭ | 466.16 |
| 4 | 71 | B | 493.88 |
| 5 | 72 | C | 523.25 |
| 5 | 73 | C♯/D♭ | 554.37 |
| 5 | 74 | D | 587.33 |
| 5 | 75 | D♯/E♭ | 622.25 |
| 5 | 76 | E | 659.26 |
| 5 | 77 | F | 698.46 |
| 5 | 78 | F♯/G♭ | 739.99 |
| 5 | 79 | G | 783.99 |
| 5 | 80 | G♯/A♭ | 830.61 |
| 5 | 81 | A | 880.0 |
| 5 | 82 | A♯/B♭ | 932.33 |
| 5 | 83 | B | 987.77 |
| 6 | 84 | C | 1046.5 |
| 6 | 85 | C♯/D♭ | 1108.73 |
| 6 | 86 | D | 1174.66 |
| 6 | 87 | D♯/E♭ | 1244.51 |
| 6 | 88 | E | 1318.51 |
| 6 | 89 | F | 1396.91 |
| 6 | 90 | F♯/G♭ | 1479.98 |
| 6 | 91 | G | 1567.98 |
| 6 | 92 | G♯/A♭ | 1661.22 |
| 6 | 93 | A | 1760.0 |
| 6 | 94 | A♯/B♭ | 1864.66 |
| 6 | 95 | B | 1975.53 |
| 7 | 96 | C | 2093.0 |
| 7 | 97 | C♯/D♭ | 2217.46 |
| 7 | 98 | D | 2349.32 |
| 7 | 99 | D♯/E♭ | 2489.02 |
| 7 | 100 | E | 2637.02 |
| 7 | 101 | F | 2793.83 |
| 7 | 102 | F♯/G♭ | 2959.96 |
| 7 | 103 | G | 3135.96 |
| 7 | 104 | G♯/A♭ | 3322.44 |
| 7 | 105 | A | 3520.0 |
| 7 | 106 | A♯/B♭ | 3729.31 |
| 7 | 107 | B | 3951.07 |
| 8 | 108 | C | 4186.01 |
| 8 | 109 | C♯/D♭ | 4434.92 |
| 8 | 110 | D | 4698.64 |
| 8 | 111 | D♯/E♭ | 4978.03 |
| 8 | 112 | E | 5274.04 |
| 8 | 113 | F | 5587.65 |
| 8 | 114 | F♯/G♭ | 5919.91 |
| 8 | 115 | G | 6271.93 |
| 8 | 116 | G♯/A♭ | 6644.88 |
| 8 | 117 | A | 7040.0 |
| 8 | 118 | A♯/B♭ | 7458.62 |
| 8 | 119 | B | 7902.13 |
| 9 | 120 | C | 8372.02 |
| 9 | 121 | C♯/D♭ | 8869.84 |
| 9 | 122 | D | 9397.27 |
| 9 | 123 | D♯/E♭ | 9956.06 |
| 9 | 124 | E | 10548.08 |
| 9 | 125 | F | 11175.3 |
| 9 | 126 | F♯/G♭ | 11839.82 |
| 9 | 127 | G | 12543.85 |