F♯7 / G♭7
Reviewed for accuracy · Maintained by Justin Evans
F♯7 highlighted — use the view toggle to see all 88 keys.
Piano key
82 of 88
Octave
7
Frequency
2959.96 Hz
MIDI number
102
Key color
Black key
Pitch class
F# · Gb · E##
What is F♯7?
F♯7 is the F♯ in octave 7 — the 82nd key of the 88 on a full-size piano, counted from the bottom. In standard tuning it sounds at 2959.96 Hz. It sits 42 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 5919.92 Hz and the one below at 1479.98 Hz. The same piano key can be written as F#, Gb, E## depending on the musical context — same sound, different spelling.
Nearby notes
Every F♯ on the keyboard: