The table below lists the MIDI notes, numbers and frequency. Ardour uses the middle C = C4 (note 60) convention, meaning that the first (lowest) octave is −1.

Frequency calculations are based on A4 = 440 Hz.

MIDI numberMIDI (english) Note NameGerman Note NameNeo-Latin Note NameOctaveFrequency (Hz) Rounded at 10-3
0CCDo-18.176
1C#/D♭C#/D♭Do#/Re♭-18.662
2DDRe-19.177
3D#/E♭D#/E♭Re#/Mi♭-19.723
4EEMi-110.301
5FFFa-110.913
6F#/G♭F#/G♭Fa#/Sol♭-111.562
7GGSol-112.250
8G#/A♭G#/A♭Sol#/La♭-112.978
9AALa-113.750
10A#/B♭A#/BLa#/Si♭-114.568
11BHSi-115.434
12CCDo016.352
13C#/D♭C#/D♭Do#/Re♭017.324
14DDRe018.354
15D#/E♭D#/E♭Re#/Mi♭019.445
16EEMi020.602
17FFFa021.827
18F#/G♭F#/G♭Fa#/Sol♭023.125
19GGSol024.500
20G#/A♭G#/A♭Sol#/La♭025.957
21AALa027.500
22A#/B♭A#/BLa#/Si♭029.135
23BHSi030.868
24CCDo132.703
25C#/D♭C#/D♭Do#/Re♭134.648
26DDRe136.708
27D#/E♭D#/E♭Re#/Mi♭138.891
28EEMi141.203
29FFFa143.654
30F#/G♭F#/G♭Fa#/Sol♭146.249
31GGSol148.999
32G#/A♭G#/A♭Sol#/La♭151.913
33AALa155.000
34A#/B♭A#/BLa#/Si♭158.270
35BHSi161.735
36CCDo265.406
37C#/D♭C#/D♭Do#/Re♭269.296
38DDRe273.416
39D#/E♭D#/E♭Re#/Mi♭277.782
40EEMi282.407
41FFFa287.307
42F#/G♭F#/G♭Fa#/Sol♭292.499
43GGSol297.999
44G#/A♭G#/A♭Sol#/La♭2103.826
45AALa2110.000
46A#/B♭A#/BLa#/Si♭2116.541
47BHSi2123.471
48CCDo3130.813
49C#/D♭C#/D♭Do#/Re♭3138.591
50DDRe3146.832
51D#/E♭D#/E♭Re#/Mi♭3155.563
52EEMi3164.814
53FFFa3174.614
54F#/G♭F#/G♭Fa#/Sol♭3184.997
55GGSol3195.998
56G#/A♭G#/A♭Sol#/La♭3207.652
57AALa3220.000
58A#/B♭A#/BLa#/Si♭3233.082
59BHSi3246.942
60CCDo4261.626
61C#/D♭C#/D♭Do#/Re♭4277.183
62DDRe4293.665
63D#/E♭D#/E♭Re#/Mi♭4311.127
64EEMi4329.628
65FFFa4349.228
66F#/G♭F#/G♭Fa#/Sol♭4369.994
67GGSol4391.995
68G#/A♭G#/A♭Sol#/La♭4415.305
69AALa4440.000
70A#/B♭A#/BLa#/Si♭4466.164
71BHSi4493.883
72CCDo5523.251
73C#/D♭C#/D♭Do#/Re♭5554.365
74DDRe5587.330
75D#/E♭D#/E♭Re#/Mi♭5622.254
76EEMi5659.255
77FFFa5698.456
78F#/G♭F#/G♭Fa#/Sol♭5739.989
79GGSol5783.991
80G#/A♭G#/A♭Sol#/La♭5830.609
81AALa5880.000
82A#/B♭A#/BLa#/Si♭5932.328
83BHSi5987.767
84CCDo61 046.502
85C#/D♭C#/D♭Do#/Re♭61 108.731
86DDRe61 174.659
87D#/E♭D#/E♭Re#/Mi♭61 244.508
88EEMi61 318.510
89FFFa61 396.913
90F#/G♭F#/G♭Fa#/Sol♭61 479.978
91GGSol61 567.982
92G#/A♭G#/A♭Sol#/La♭61 661.219
93AALa61 760.000
94A#/B♭A#/BLa#/Si♭61 864.655
95BHSi61 975.533
96CCDo72 093.005
97C#/D♭C#/D♭Do#/Re♭72 217.461
98DDRe72 349.318
99D#/E♭D#/E♭Re#/Mi♭72 489.016
100EEMi72 637.020
101FFFa72 793.826
102F#/G♭F#/G♭Fa#/Sol♭72 959.955
103GGSol73 135.963
104G#/A♭G#/A♭Sol#/La♭73 322.438
105AALa73 520.000
106A#/B♭A#/BLa#/Si♭73 729.310
107BHSi73 951.066
108CCDo84 186.009
109C#/D♭C#/D♭Do#/Re♭84 434.922
110DDRe84 698.636
111D#/E♭D#/E♭Re#/Mi♭84 978.032
112EEMi85 274.041
113FFFa85 587.652
114F#/G♭F#/G♭Fa#/Sol♭85 919.911
115GGSol86 271.927
116G#/A♭G#/A♭Sol#/La♭86 644.875
117AALa87 040.000
118A#/B♭A#/BLa#/Si♭87 458.620
119BHSi87 902.133
120CCDo98 372.018
121C#/D♭C#/D♭Do#/Re♭98 869.844
122DDRe99 397.273
123D#/E♭D#/E♭Re#/Mi♭99 956.063
124EEMi910 548.082
125FFFa911 175.303
126F#/G♭F#/G♭Fa#/Sol♭911 839.822
127GGSol912 543.854