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F♯2 / G♭2 · 92.50 Hz

F♯2 is piano key 22 of 88 and MIDI note 42 - the bass register, where bass lines and a male bass voice live. Play the pure tone below, tune to it, or explore the note in every octave.

92.5Hz

Volume50%

Waveform

F♯2 at a glance

Frequency

92.50 Hz

Wavelength (in air)

3.71 m

MIDI note

42

Piano key

22 / 88

Octave

2

Enharmonic

G♭2

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 F♯2 is exactly 440 × 2^(-27/12) Hz. Under alternative references the note shifts with the reference: at A4 = 432 Hz, F♯2 becomes 90.82 Hz.

F♯ in every octave

Note	Frequency	MIDI	Piano key
F♯1	46.25 Hz	30	10
F♯2 ←	92.50 Hz	42	22
F♯3	185.00 Hz	54	34
F♯4	369.99 Hz	66	46
F♯5	739.99 Hz	78	58
F♯6	1480.0 Hz	90	70
F♯7	2960.0 Hz	102	82

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

Neighboring notes

E2 · 82.41 Hz F2 · 87.31 HzF♯2 · 92.50 HzG2 · 98.00 Hz G♯2 · 103.83 Hz

One semitone down is F2 at 87.31 Hz; one semitone up is G2 at 98.00 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.

F♯2 FAQ

What frequency is F♯2?

F♯2 / G♭2 is 92.50 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 F♯2 sits 27 semitones below A4.

What MIDI number and piano key is F♯2?

F♯2 is MIDI note 42 and key 22 of 88 on a standard piano. Octave numbering follows scientific pitch notation, where middle C is C4 (MIDI 60).

How do I tune to F♯2?

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 18.6 cents off.

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