MIDI Notes and Frequencies

The following chart shows the musical pitch and frequency associated to each MIDI Note in Sound Forge. A4 is at 440 Hz and middle C is C4 at 261.63 Hz. These values can differ, often by one octave, from values used by other manufacturers. To avoid having negative values, some MIDI sequencers and sound modules use C0 as MIDI Key 0, which then makes middle C C3 instead of the more standard C4. You can change the base that Sound Forge uses in the Preferences dialog.

The following frequencies are based on equal temperament tuning.

Pitch

MIDI Key

Frequency

 

Pitch

MIDI Key

Frequency

C -1

0

8.176

E 4

64

329.63

C# -1

1

8.662

F 4

65

349.23

D -1

2

9.177

F# 4

66

369.99

D# -1

3

9.723

G 4

67

391.99

E -1

4

10.301

G# 4

68

415.31

F -1

5

10.913

A 4

69

440.00

F# -1

6

11.562

A# 4

70

466.16

G -1

7

12.250

B 4

71

439.88

G# -1

8

12.978

C 5

72

523.25

A -1

9

13.750

C# 5

73

554.37

A# -1

10

14.568

D 5

74

587.33

B -1

11

15.434

D# 5

75

622.25

C 0

12

16.352

E 5

76

659.26

C# 0

13

17.324

F 5

77

698.46

D 0

14

18.354

F# 5

78

739.99

D# 0

15

19.445

G 5

79

783.99

E 0

16

20.601

G# 5

80

830.61

F 0

17

21.826

A 5

81

880.00

F# 0

18

23.124

A# 5

82

932.32

G 0

19

24.499

B 5

83

987.77

G# 0

20

25.956

C 6

84

1046.5

A 0

21

27.500

C# 6

85

1108.7

A# 0

22

29.135

D 6

86

1174.7

B 0

23

30.867

D# 6

87

1244.5

C 1

24

32.703

E 6

88

1318.5

C# 1

25

34.648

F 6

89

1396.9

D 1

26

36.708

F# 6

90

1480.0

D# 1

27

38.890

G 6

91

1568.0

E 1

28

41.203

G# 6

92

1661.2

F 1

29

43.653

A 6

93

1760.0

F# 1

30

46.249

A# 6

94

1864.7

G 1

31

48.999

B 6

95

1975.5

G# 1

32

51.913

C 7

96

2093.0

A 1

33

55.000

C# 7

97

2217.5

A# 1

34

58.270

D 7

98

2349.3

B 1

35

61.735

D# 7

99

2489.0

C 2

36

65.406

E 7

100

2637.0

C# 2

37

69.295

F 7

101

2793.8

D 2

38

73.416

F# 7

102

2960.0

D# 2

39

77.781

G 7

103

3136.0

E 2

40

82.406

G# 7

104

3322.4

F 2

41

87.307

A 7

105

3520.0

F# 2

42

92.499

A# 7

106

3729.3

G 2

43

97.998

B 7

107

3951.1

G# 2

44

103.82

C 8

108

4186.0

A 2

45

110.00

C# 8

109

4434.9

A# 2

46

116.54

D 8

110

4698.6

B 2

47

123.47

D# 8

111

4978.0

C 3

48

130.81

E 8

112

5274.0

C# 3

49

138.59

F 8

113

5587.7

D 3

50

146.83

F# 8

114

5919.9

D# 3

51

155.56

G 8

115

6271.9

E 3

52

164.81

G# 8

116

6644.9

F 3

53

174.61

A 8

117

7040.0

F# 3

54

184.99

A# 8

118

7458.6

G 3

55

195.99

B 8

119

7902.1

G# 3

56

207.65

C 9

120

8372.0

A 3

57

220.00

C# 9

121

8869.8

A# 3

58

233.08

D 9

122

9397.3

B 3

59

246.94

D# 9

123

9956.1

C 4

60

261.63

E 9

124

10548.1

C# 4

61

277.18

F 9

125

11175.3

D 4

62

293.66

F# 9

126

11839.8

D# 4

63

311.13

G 9

127

12543.9