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Frequency / Midi Note Table

This table lists the 'MIDI note number', the ANSI note name, and the frequency (hz) for each note on the piano keyboard. F3 through F6 are required to play the two Mozart works for the armonica.

(The grey rows are the 'black keys' on the piano)

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
  

Equations:

f = frequency
m = midi note number

f = 27.5 * 2((m - 21)/12)

m = (12/ln(2)) * ln(f/27.5) + 21

Note: Fractional midi note number will give you 'cents' from standard pitch: e.g. 66.33 would be 33 cents above F#4