F7
Reviewed for accuracy · Maintained by Justin Evans
F7 highlighted — use the view toggle to see all 88 keys.
Piano key
81 of 88
Octave
7
Frequency
2793.83 Hz
MIDI number
101
Key color
White key
Pitch class
F · E# · Gbb
What is F7?
F7 is the F in octave 7 — the 81st key of the 88 on a full-size piano, counted from the bottom. In standard tuning it sounds at 2793.83 Hz. It sits 41 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) 3 octaves to reach octave 7, then step to F.
Every octave doubles the frequency: the F one octave up sounds at 5587.66 Hz and the one below at 1396.92 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: