F♯2 / G♭2
92.499Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
42
Piano key
22
Octave
2
Frequency
92.499 Hz
Period
10.8109 ms
Wavelength
3.7081 m
Pitch class
F♯
Notation
SPN
MIDI is the note number synths and software pass around (0–127). Pitch class is the note without its octave — all the F♯s share one. Enharmonic spellings (F♯2 and G♭2) name the same pitch two ways.
At other reference pitches
| Reference (A4) | F♯2 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 90.817 Hz | the alternative-tuning circle |
| 440 Hzstandard | 92.499 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 92.919 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 93.129 Hz | some sharper continental orchestras |
Every row is F♯2 — only the A4 you tune to changes. A frequency scales straight with the reference: F♯2 at 432 Hz is the 440 Hz value times 432⁄440.
Move around
Every F♯
Chords with F♯ in them
F♯ appears in each of these — see the whole chord grid.