MIDI Notes and Frequencies

The following chart shows the musical pitch and frequency associated with each MIDI note.

A5 is 440 Hz, and middle C is C5 at 261.63 Hz. These values can differ — often by one octave — from values used by other manufacturers. Some MIDI sequencers and sound modules use C-1 as MIDI key 0, which then makes middle C C4.

The following frequencies are based on equal temperament tuning.

Pitch

MIDI Key

Frequency

 

Pitch

MIDI Key

Frequency

C 0

0

8.176

E 5

64

329.63

C# 0

1

8.662

F 5

65

349.23

D 0

2

9.177

F# 5

66

369.99

D# 0

3

9.723

G 5

67

391.99

E 0

4

10.301

G# 5

68

415.31

F 0

5

10.913

A 5

69

440.00

F# 0

6

11.562

A# 5

70

466.16

G 0

7

12.250

B 5

71

493.88

G# 0

8

12.978

C 6

72

523.25

A 0

9

13.750

C# 6

73

554.37

A# 0

10

14.568

D 6

74

587.33

B 0

11

15.434

D# 6

75

622.25

C 1

12

16.352

E 6

76

659.26

C# 1

13

17.324

F 6

77

698.46

D 1

14

18.354

F# 6

78

739.99

D# 1

15

19.445

G 6

79

783.99

E 1

16

20.601

G# 6

80

830.61

F 1

17

21.826

A 6

81

880.00

F# 1

18

23.124

A# 6

82

932.32

G 1

19

24.499

B 6

83

987.77

G# 1

20

25.956

C 7

84

1046.5

A 1

21

27.500

C# 7

85

1108.7

A# 1

22

29.135

D 7

86

1174.7

B 1

23

30.867

D# 7

87

1244.5

C 2

24

32.703

E 7

88

1318.5

C# 2

25

34.648

F 7

89

1396.9

D 2

26

36.708

F# 7

90

1480.0

D# 2

27

38.890

G 7

91

1568.0

E 2

28

41.203

G# 7

92

1661.2

F 2

29

43.653

A 7

93

1760.0

F# 2

30

46.249

A# 7

94

1864.7

G 2

31

48.999

B 7

95

1975.5

G# 2

32

51.913

C 8

96

2093.0

A 2

33

55.000

C# 8

97

2217.5

A# 2

34

58.270

D 8

98

2349.3

B 2

35

61.735

D# 8

99

2489.0

C 3

36

65.406

E 8

100

2637.0

C# 3

37

69.295

F 8

101

2793.8

D 3

38

73.416

F# 8

102

2960.0

D# 3

39

77.781

G 8

103

3136.0

E 3

40

82.406

G# 8

104

3322.4

F 3

41

87.307

A 8

105

3520.0

F# 3

42

92.499

A# 8

106

3729.3

G 3

43

97.998

B 8

107

3951.1

G# 3

44

103.82

C 9

108

4186.0

A 3

45

110.00

C# 9

109

4434.9

A# 3

46

116.54

D 9

110

4698.6

B 3

47

123.47

D# 9

111

4978.0

C 4

48

130.81

E 9

112

5274.0

C# 4

49

138.59

F 9

113

5587.7

D 4

50

146.83

F# 9

114

5919.9

D# 4

51

155.56

G 9

115

6271.9

E 4

52

164.81

G# 9

116

6644.9

F 4

53

174.61

A 9

117

7040.0

F# 4

54

184.99

A# 9

118

7458.6

G 4

55

195.99

B 9

119

7902.1

G# 4

56

207.65

C 10

120

8372.0

A 4

57

220.00

C# 10

121

8869.8

A# 4

58

233.08

D 10

122

9397.3

B 4

59

246.94

D# 10

123

9956.1

C 5

60

261.63

E 10

124

10548.1

C# 5

61

277.18

F 10

125

11175.3

D 5

62

293.66

F# 10

126

11839.8

D# 5

63

311.13

G 10

127

12543.9

MIDI Notes and Frequencies