G♯6 / A♭6
1,661.219Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
92
Piano key
72
Octave
6
Frequency
1,661.219 Hz
Period
0.602 ms
Wavelength
0.2065 m
Pitch class
G♯
Notation
SPN
MIDI is the note number synths and software pass around (0–127). Pitch class is the note without its octave — all the G♯s share one. Enharmonic spellings (G♯6 and A♭6) name the same pitch two ways.
At other reference pitches
| Reference (A4) | G♯6 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 1,631.015 Hz | the alternative-tuning circle |
| 440 Hzstandard | 1,661.219 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 1,668.77 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 1,672.545 Hz | some sharper continental orchestras |
Every row is G♯6 — only the A4 you tune to changes. A frequency scales straight with the reference: G♯6 at 432 Hz is the 440 Hz value times 432⁄440.
Move around
Every G♯
Chords with G♯ in them
G♯ appears in each of these — see the whole chord grid.