F6
Reviewed for accuracy · Maintained by Justin Evans
F6 highlighted — use the view toggle to see all 88 keys.
Piano key
69 of 88
Octave
6
Frequency
1396.91 Hz
MIDI number
89
Key color
White key
Pitch class
F · E# · Gbb
What is F6?
F6 is the F in octave 6 — the 69th key of the 88 on a full-size piano, counted from the bottom. In standard tuning it sounds at 1396.91 Hz. It sits 29 half-steps above middle C (C4).
To find it, locate any group of two black keys: the white key just to their left is a C. Count up from middle C (C4) 2 octaves to reach octave 6, then step to F.
Every octave doubles the frequency: the F one octave up sounds at 2793.82 Hz and the one below at 698.46 Hz. The same piano key can be written as F, E#, Gbb depending on the musical context — same sound, different spelling.
Nearby notes
Every F on the keyboard: