F♯6 / G♭6
Reviewed for accuracy · Maintained by Justin Evans
F♯6 highlighted — use the view toggle to see all 88 keys.
Piano key
70 of 88
Octave
6
Frequency
1479.98 Hz
MIDI number
90
Key color
Black key
Pitch class
F# · Gb · E##
What is F♯6?
F♯6 is the F♯ in octave 6 — the 70th key of the 88 on a full-size piano, counted from the bottom. In standard tuning it sounds at 1479.98 Hz. It sits 30 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 2959.96 Hz and the one below at 739.99 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: