MIDI Note ANSI Note Frequency (hz) 21 A0 27.5 22 A#0 29.1 23 B0 30.9 24 C1 32.7 25 C#1 34.6 26 D1 36.7 27 D#1 38.9 28 E1 41.2 29 F1 43.7 30 F#1 46.2 31 G1 49.0 32 G#1 51.9 33 A1 55.0 34 A#1 58.3 35 B1 61.7 36 C2 65.4 37 C#2 69.3 38 D2 73.4 39 D#2 77.8 40 E2 82.4 41 F2 87.3 42 F#2 92.5 43 G2 98.0 44 G#2 103.8 45 A2 110.0 46 A#2 116.5 47 B2 123.5 48 C3 130.8 49 C#3 138.6 50 D3 146.8 51 D#3 155.6 52 E3 164.8 53 F3 174.6 54 F#3 185.0 55 G3 196.0 56 G#3 207.7 57 A3 220.0 58 A#3 233.1 59 B3 246.9 60 C4 261.6 61 C#4 277.2 62 D4 293.7 63 D#4 311.1 64 E4 329.6 65 F4 349.2 66 F#4 370.0 67 G4 392.0 68 G#4 415.3 69 A4 440.0 70 A#4 466.2 71 B4 493.9 72 C5 523.3 73 C#5 554.4 74 D5 587.3 75 D#5 622.3 76 E5 659.3 77 F5 698.5 78 F#5 740.0 79 G5 784.0 80 G#5 830.6 81 A5 880.0 82 A#5 932.3 83 B5 987.8 84 C6 1046.5 85 C#6 1108.7 86 D6 1174.7 87 D#6 1244.5 88 E6 1318.5 89 F6 1396.9 90 F#6 1480.0 91 G6 1568.0 92 G#6 1661.2 93 A6 1760.0 94 A#6 1864.7 95 B6 1975.5 96 C7 2093.0 97 C#7 2217.5 98 D7 2349.3 99 D#7 2489.0 100 E7 2637.0 101 F7 2793.8 102 F#7 2960.0 103 G7 3136.0 104 G#7 3322.4 105 A7 3520.0 106 A#7 3729.3 107 B7 3951.1 108 C8 4186.0