F♯3 / G♭3
184.997Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
54
Piano key
34
Octave
3
Frequency
184.997 Hz
Period
5.4055 ms
Wavelength
1.8541 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♯3 and G♭3) name the same pitch two ways.
At other reference pitches
| Reference (A4) | F♯3 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 181.634 Hz | the alternative-tuning circle |
| 440 Hzstandard | 184.997 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 185.838 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 186.259 Hz | some sharper continental orchestras |
Every row is F♯3 — only the A4 you tune to changes. A frequency scales straight with the reference: F♯3 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.