G♯7 / A♭7
G♯7 highlighted — use the view toggle to see all 88 keys.
Piano key
84 of 88
Octave
7
Frequency
3322.44 Hz
MIDI number
104
Key color
Black key
Pitch class
G#, Ab
What is G♯7?
G♯7 is the G♯ in octave 7 — the 84th key of the 88 on a full-size piano, counted from the bottom. In standard tuning it sounds at 3322.44 Hz. It sits 44 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 G♯.
Every octave doubles the frequency: the G♯ one octave up sounds at 6644.88 Hz and the one below at 1661.22 Hz. The same piano key can be written as G#, Ab depending on the musical context — same sound, different spelling.
Nearby notes
Every G♯ on the keyboard: