F6
1,396.913Hz at concert pitch
Press to hear a pure sine tone at this pitch.
MIDI note
89
Piano key
69
Octave
6
Frequency
1,396.913 Hz
Period
0.7159 ms
Wavelength
0.2455 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 Fs share one.
At other reference pitches
| Reference (A4) | F6 frequency | Where you meet it |
|---|---|---|
| 432 Hz | 1,371.515 Hz | the alternative-tuning circle |
| 440 Hzstandard | 1,396.913 Hz | the ISO 16 standard — concert pitch |
| 442 Hz | 1,403.263 Hz | many European orchestras tune a touch sharp |
| 443 Hz | 1,406.437 Hz | some sharper continental orchestras |
Every row is F6 — only the A4 you tune to changes. A frequency scales straight with the reference: F6 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.