PIANO KEY FREQUENCIES

This is a 'virtual piano' with 88 keys tuned to A440, showing the frequencies, in cycles per second (Hz), of each note (i.e. Note frequencies of each note found on a standard piano). This distribution of frequencies is known as equal temperament, i.e. each successive pitch is derived by multiplying the previous by the twelfth root of two. For example, A4 is normally tuned to 440 Hz. To get the next semitone (A4 sharp), multiply 440 Hz by the twelfth root of two. To go from A4 to B4 (up two semitones), multiply 440 by the twelfth root of two squared. For other tuning schemes refer to Musical tuning.
This list of frequencies is for a theoretical ideal piano. On an actual piano the ratio between semitones becomes slightly larger due to string thickness which causes inharmonicity due to the nonzero force required to bend steel piano wire even in the absence of tension. This effect is sometimes known as stretched octaves, and the pattern of deviation is called the Railsback curve.

Contents

Virtual piano

See also

External links

Virtual piano

Key number	Helmholtz name	Scientific name	Frequency (Hz)
88	c′′′′′ '(5-line 8ve)'	'C8'	4186.01
87	b′′′′	B7	3951.07
86	a′′′′/b′′′′	A7/B7	3729.31
85	a′′′′	A7	3520.00
84	g′′′′/a′′′′	G7/A7	3322.44
83	g′′′′	G7	3135.96
82	f′′′′/g′′′′	F7/G7	2959.96
81	f′′′′	F7	2793.83
80	e′′′′	E7	2637.02
79	d′′′′/e′′′′	D7/E7	2489.02
78	d′′′′	D7	2349.32
77	c′′′′/d′′′′	C7/D7	2217.46
76	c′′′′ '(4-line 8ve)'	C7 '(Double high C)'	2093.00
75	b′′′	B6	1975.53
74	a′′′/b′′′	A6/B6	1864.66
73	a′′′	A6	1760.00
72	g′′′/a′′′	G6/A6	1661.22
71	g′′′	G6	1567.98
70	f′′′/g′′′	F6/G6	1479.98
69	f′′′	F6	1396.91
68	e′′′	E6	1318.51
67	d′′′/e′′′	D6/E6	1244.51
66	d′′′	D6	1174.66
65	c′′′/d′′′	C6/D6	1108.73
64	c′′′ '(3-line 8ve)'	C6 '(Soprano C)'	1046.50
63	b′′	B5	987.767
62	a′′/b′′	A5/B5	932.328
61	a′′	A5	880.000
60	g′′/a′′	G5/A5	830.609
59	g′′	G5	783.991
58	f′′/g′′	F5/G5	739.989
57	f′′	F5	698.456
56	e′′	E5	659.255
55	d′′/e′′	D5/E5	622.254
54	d′′	D5	587.330
53	c′′/d′′	C5/D5	554.365
52	c′′ '(2-line 8ve)'	C5 '(Tenor C)'	523.251
51	b′	B4	493.883
50	a′/b′	A4/B4	466.164
49	a′	A4 '(A440)'	440.000
48	g′/a′	G4/A4	415.305
47	g′	G4	391.995
46	f′/g′	F4/G4	369.994
45	f′	F4	349.228
44	e′	E4	329.628
43	d′/e′	D4/E4	311.127
42	d′	D4	293.665
41	c′/d′	C4/D4	277.183
40	c′ '(1-line 8ve)'	C4 '(Middle C)'	261.626
39	b	B3	246.942
38	a/b	A3/B3	233.082
37	a	A3	220.000
36	g/a	G3/A3	207.652
35	g	G3	195.998
34	f/g	F3/G3	184.997
33	f	F3	174.614
32	e	E3	164.814
31	d/e	D3/E3	155.563
30	d	D3	146.832
29	c/d	C3/D3	138.591
28	c '(small 8ve)'	C3 '(Low C)'	130.813
27	B	B2	123.471
26	A/B	A2/B2	116.541
25	A	A2	110.000
24	G/A	G2/A2	103.826
23	G	G2	97.9989
22	F/G	F2/G2	92.4986
21	F	F2	87.3071
20	E	E2	82.4069
19	D/E	D2/E2	77.7817
18	D	D2	73.4162
17	C/D	C2/D2	69.2957
16	C '(great 8ve)'	C2 '(Deep C)'	65.4064
15	Bˌ	B1	61.7354
14	Aˌ/Bˌ	A1/B1	58.2705
13	Aˌ	A1	55.0000
12	Gˌ/Aˌ	G1/A1	51.9130
11	Gˌ	G1	48.9995
10	Fˌ/Gˌ	F1/G1	46.2493
9	Fˌ	F1	43.6536
8	Eˌ	E1	41.2035
7	Dˌ/Eˌ	D1/E1	38.8909
6	Dˌ	D1	36.7081
5	Cˌ/Dˌ	C1/D1	34.6479
4	Cˌ '(contra-8ve)'	C1	32.7032
3	Bˌˌ	B0	30.8677
2	Aˌˌ/Bˌˌ	A0/B0	29.1353
1	Aˌˌ '(sub-contra-8ve)'	A0	27.5000

See also

★ Piano tuning

External links

★ Piano frequency table.pl - A small GFDL perl script containing the information from the table on this page in a perl data structure.

★ interactive piano frequency table — A php script allowing the reference pitch of A49 to be altered from 440 hz.

★ Tuned Piano - a web piano tuned to equal temperament.