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Frequencies of music notes table
Table shows frequencies of music notes in twelve-tone equal tempered system (12-TET). Both basic tone and up to three harmonic frequencies are presented.

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Note frequencies

MIDI numberNote [US]Note [PL/DE]Basic tone [Hz]1-st harmonic [Hz]2-nd harmonic [Hz]3-rd harmonic [Hz]
0C-1C-18.1816.3524.5332.7
1C♯-1 / D♭-1C♯-1 / D♭-18.6617.3225.9934.65
2D-1D-19.1818.3527.5336.71
3D♯-1 / E♭-1D♯-1 / E♭-19.7219.4529.1738.89
4E-1E-110.320.630.941.2
5F-1F-110.9121.8332.7443.65
6F♯-1 / G♭-1F♯-1 / G♭-111.5623.1234.6946.25
7G-1G-112.2524.536.7549
8G♯-1 / A♭-1G♯-1 / A♭-112.9825.9638.9351.91
9A-1A-113.7527.541.2555
10A♯-1 / B♭-1B-114.5729.1443.758.27
11B-1H-115.4330.8746.361.74
12C0C016.3532.749.0565.41
13C♯0 / D♭0C♯0 / D♭017.3234.6551.9769.3
14D0D018.3536.7155.0673.42
15D♯0 / E♭0D♯0 / E♭019.4538.8958.3477.78
16E0E020.641.261.8182.41
17F0F021.8343.6565.4887.31
18F♯0 / G♭0F♯0 / G♭023.1246.2569.3792.5
19G0G024.54973.598
20G♯0 / A♭0G♯0 / A♭025.9651.9177.87103.83
21A0A027.55582.5110
22A♯0 / B♭0B029.1458.2787.41116.54
23B0H030.8761.7492.6123.47
24C1C132.765.4198.11130.81
25C♯1 / D♭1C♯1 / D♭134.6569.3103.94138.59
26D1D136.7173.42110.12146.83
27D♯1 / E♭1D♯1 / E♭138.8977.78116.67155.56
28E1E141.282.41123.61164.81
29F1F143.6587.31130.96174.61
30F♯1 / G♭1F♯1 / G♭146.2592.5138.75185
31G1G14998147196
32G♯1 / A♭1G♯1 / A♭151.91103.83155.74207.65
33A1A155110165220
34A♯1 / B♭1B158.27116.54174.81233.08
35B1H161.74123.47185.21246.94
36C2C265.41130.81196.22261.63
37C♯2 / D♭2C♯2 / D♭269.3138.59207.89277.18
38D2D273.42146.83220.25293.66
39D♯2 / E♭2D♯2 / E♭277.78155.56233.35311.13
40E2E282.41164.81247.22329.63
41F2F287.31174.61261.92349.23
42F♯2 / G♭2F♯2 / G♭292.5185277.5369.99
43G2G298196294392
44G♯2 / A♭2G♯2 / A♭2103.83207.65311.48415.3
45A2A2110220330440
46A♯2 / B♭2B2116.54233.08349.62466.16
47B2H2123.47246.94370.41493.88
48C3C3130.81261.63392.44523.25
49C♯3 / D♭3C♯3 / D♭3138.59277.18415.77554.37
50D3D3146.83293.66440.5587.33
51D♯3 / E♭3D♯3 / E♭3155.56311.13466.69622.25
52E3E3164.81329.63494.44659.26
53F3F3174.61349.23523.84698.46
54F♯3 / G♭3F♯3 / G♭3185369.99554.99739.99
55G3G3196392587.99783.99
56G♯3 / A♭3G♯3 / A♭3207.65415.3622.96830.61
57A3A3220440660880
58A♯3 / B♭3B3233.08466.16699.25932.33
59B3H3246.94493.88740.82987.77
60C4C4261.63523.25784.881046.5
61C♯4 / D♭4C♯4 / D♭4277.18554.37831.551108.73
62D4D4293.66587.33880.991174.66
63D♯4 / E♭4D♯4 / E♭4311.13622.25933.381244.51
64E4E4329.63659.26988.881318.51
65F4F4349.23698.461047.681396.91
66F♯4 / G♭4F♯4 / G♭4369.99739.991109.981479.98
67G4G4392783.991175.991567.98
68G♯4 / A♭4G♯4 / A♭4415.3830.611245.911661.22
69A4A444088013201760
70A♯4 / B♭4B4466.16932.331398.491864.66
71B4H4493.88987.771481.651975.53
72C5C5523.251046.51569.752093
73C♯5 / D♭5C♯5 / D♭5554.371108.731663.12217.46
74D5D5587.331174.661761.992349.32
75D♯5 / E♭5D♯5 / E♭5622.251244.511866.762489.02
76E5E5659.261318.511977.772637.02
77F5F5698.461396.912095.372793.83
78F♯5 / G♭5F♯5 / G♭5739.991479.982219.972959.96
79G5G5783.991567.982351.973135.96
80G♯5 / A♭5G♯5 / A♭5830.611661.222491.833322.44
81A5A5880176026403520
82A♯5 / B♭5B5932.331864.662796.983729.31
83B5H5987.771975.532963.33951.07
84C6C61046.520933139.514186.01
85C♯6 / D♭6C♯6 / D♭61108.732217.463326.194434.92
86D6D61174.662349.323523.984698.64
87D♯6 / E♭6D♯6 / E♭61244.512489.023733.524978.03
88E6E61318.512637.023955.535274.04
89F6F61396.912793.834190.745587.65
90F♯6 / G♭6F♯6 / G♭61479.982959.964439.935919.91
91G6G61567.983135.964703.956271.93
92G♯6 / A♭6G♯6 / A♭61661.223322.444983.666644.88
93A6A61760352052807040
94A♯6 / B♭6B61864.663729.315593.977458.62
95B6H61975.533951.075926.67902.13
96C7C720934186.016279.018372.02
97C♯7 / D♭7C♯7 / D♭72217.464434.926652.388869.84
98D7D72349.324698.647047.959397.27
99D♯7 / E♭7D♯7 / E♭72489.024978.037467.059956.06
100E7E72637.025274.047911.0610548.08
101F7F72793.835587.658381.4811175.3
102F♯7 / G♭7F♯7 / G♭72959.965919.918879.8711839.82
103G7G73135.966271.939407.8912543.85
104G♯7 / A♭7G♯7 / A♭73322.446644.889967.3113289.75
105A7A7352070401056014080
106A♯7 / B♭7B73729.317458.6211187.9314917.24
107B7H73951.077902.1311853.215804.27
108C8C84186.018372.0212558.0316744.04
109C♯8 / D♭8C♯8 / D♭84434.928869.8413304.7717739.69
110D8D84698.649397.2714095.9118794.55
111D♯8 / E♭8D♯8 / E♭84978.039956.0614934.119912.13
112E8E85274.0410548.0815822.1221096.16
113F8F85587.6511175.316762.9622350.61
114F♯8 / G♭8F♯8 / G♭85919.9111839.8217759.7323679.64
115G8G86271.9312543.8518815.7825087.71
116G♯8 / A♭8G♯8 / A♭86644.8813289.7519934.6326579.5
117A8A87040140802112028160
118A♯8 / B♭8B87458.6214917.2422375.8629834.48
119B8H87902.1315804.2723706.431608.53
120C9C98372.0216744.0425116.0533488.07
121C♯9 / D♭9C♯9 / D♭98869.8417739.6926609.5335479.38
122D9D99397.2718794.5528191.8237589.09
123D♯9 / E♭9D♯9 / E♭99956.0619912.1329868.1939824.25
124E9E910548.0821096.1631644.2542192.33
125F9F911175.322350.6133525.9144701.21
126F♯9 / G♭9F♯9 / G♭911839.8223679.6435519.4647359.29
127G9G912543.8525087.7137631.5650175.42

Some facts

  • In a twelve-tone equal tempered system, the octave is divided into 12 equal parts (degrees).
  • The transition by one octave up, corresponds to multiplying the frequency by two.
  • The transition by one scale step corresponds to multiplying the frequency by 212\sqrt[12]{2} (the twelve-degree root of two).
  • The basis for determining the frequency of individual notes is the frequency 440 Hz, which was arbitrary assigned to the A4 note.
  • Frequency 440 Hz was selected as a valid standard in 1939. In the past, however, other reference frequencies have been used depending on the historical period and the region. Directly before 1939, the so-called Pythagorean tuning was used with 432 Hz frequency of A4 note.
  • The frequency of the basic tone of any note selected in the tempering system can be calculated using the following formula:
    f=440Hz×2n12f = 440 Hz \times 2^{\frac{n}{12}}
    where:
    • f - frequency of base tone,
    • n - the number of steps (halftones) to be overcome to go from the A4 note to the selected one.
  • ⓘ Example: The base frequency of C5 note is:
    f=440Hz×2312= 523.25Hzf = 440 Hz \times 2^{\frac{3}{12}} = ~523.25 Hz
  • In the MIDI standard, the note A4 is assigned to number 69 (called pitch). Increasing the MIDI number by 1 means increasing the note by 1 semitone and vice versa. The frequency assigned to any MIDI number is therefore:
    f=440Hz×2p6912f = 440 Hz \times 2^{\frac{p - 69}{12}}
    where:
    • f - frequency assigned to given MIDI number,
    • p - MIDI number (pitch).
    If we transform above formula we will get formula to convert note frequency into a MIDI number (pitch):
    p=69+12×log2(f440Hz)p = 69 + 12 \times \log_2{\left(\frac{f}{440 Hz}\right)}
  • Most of the world (including US, UK and most of Europe countries) use below names of whole tones:
    C D E F G A B

    Halftones are named by adding sharp (to increase by halftone) of flat (to decrease by halftone). Then we can create names of all notes from 12-TET chromatic scale:
    • names created using sharp sign (increasing by halftone):
      C C♯ D D♯ E F F♯ G G♯ A A♯ B

    • names created using flat sign (decreasing by halftone):
      C D♭ D E♭ E F G♭ G A♭ A B♭ B
  • In the Poland, Germany, Scandinavian countries the last note in chromatic scale (note B in "international" naming) is marked with letter H. So, the names of whole tones in these regions are as below:
    C D E F G A H

    Names of halftones are created in the same way as before, i.e. by adding a flat or a sharp signs, except the penultimate note (B♭ on the international scale), which is marked with the letter B. So, the names of the chromatic scale notes in these regions are as follows:
    • names created using sharp sign (increasing by halftone):
      C C♯ D D♯ E F F♯ G G♯ A B H

    • names created using flat sign (decreasing by halftone):
      C D♭ D E♭ E F G♭ G A♭ A B H
  • We read rote C♯ as c sharp, note D♯ as d sharp etc.
  • We read note D♭ as d flat, note E♭ as e flat etc.
  • In addition, sometimes the so-called solomization names of wholetones are used, when learning to sing:
    do re mi fa sol la si do

    Initially, the first and last degree (i.e. note C) was singed as ut, but over time this name was displaced by do. However, in some countries (for example in France) the original name is still used.

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