F6 · 1396.9 Hz

F6 is piano key 69 of 88 and MIDI note 89 - the brilliance register, piccolo and flute territory, where pitch stays clear but thin. Play the pure tone below, tune to it, or explore the note in every octave.

1396.91Hz
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Download 1396.91 Hz tone

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F6 on the staff and the piano

On the treble clef, F6 sits above the third ledger line above the staff.

On the piano, F6 is key 69 of 88, octave 6 - a white key. It is 29 semitones above middle C (C4, key 40).

C4F6

Play it on the online piano, or see all 88 note frequencies on one page.

F6 at a glance

Frequency
1396.9 Hz
Wavelength (in air)
24.6 cm
MIDI note
89
Piano key
69 / 88
Octave
6
Enharmonic
—

All values assume twelve-tone equal temperament at the international standard pitch of A4 = 440 Hz. In that system every semitone has the same size - a frequency ratio of 2^(1/12) - so F6 is exactly 440 × 2^(20/12) Hz. Under alternative references the note shifts with the reference: at A4 = 432 Hz, F6 becomes 1371.5 Hz.

F in every octave

NoteFrequencyMIDIPiano key
F143.65 Hz299
F287.31 Hz4121
F3174.61 Hz5333
F4349.23 Hz6545
F5698.46 Hz7757
F6 ←1396.9 Hz8969
F72793.8 Hz10181

Each octave doubles the frequency - the simplest relationship in music, and the reason notes an octave apart sound like “the same note, higher”.

Who plays F6

F6 is within the usual range of the piano, violin, flute and clarinet. It is outside the usual range of all the classical voice types listed here.

Instruments
  • Piano: A0–C8
  • Violin: G3–A7
  • Flute: C4–C7
  • Clarinet (B♭): D3–B♭6
Voices

None of the usual voice ranges

Ranges are approximate: they are the commonly cited sounding (concert) pitches, and real ranges vary by player, instrument, tuning and repertoire. Guitar, bass guitar and double bass are written an octave higher than they sound; B♭ clarinet and trumpet are written a whole tone higher.

Neighboring notes

One semitone down is E6 at 1318.5 Hz; one semitone up is F♯6 at 1480.0 Hz. Need a frequency between notes, or a different waveform? The tone generator plays anything from 20 Hz to 20 kHz; the note ↔ frequency converter does the math both directions, and the chromatic tuner listens to your instrument and shows the offset in cents.

F6 FAQ

What frequency is F6?

F6 is 1396.9 Hz in twelve-tone equal temperament with the standard reference of A4 = 440 Hz. Every semitone step multiplies the frequency by the twelfth root of two (about 1.0595), and F6 sits 20 semitones above A4.

What MIDI number and piano key is F6?

F6 is MIDI note 89 and key 69 of 88 on a standard piano. Octave numbering follows scientific pitch notation, where middle C is C4 (MIDI 60).

Where is F6 on the piano and the staff?

F6 is key 69 of 88 on a standard piano, in octave 6, 29 semitones above middle C. On the treble clef staff it sits above the third ledger line above the staff.

How do I tune to F6?

Play the tone above and match your instrument by ear until the beating between the two pitches slows and disappears, or use the chromatic tuner with your microphone for a cents readout. Small mistunings show up as slow beats: one beat per second at this pitch means you are about 1.2 cents off.