The G♭ Note

G♭ is a black key, immediately next to G. It sounds at 369.99 Hz in octave 4.

G♭ on the piano

Press play to hear the note.

Key facts

On the keyboard
a black key, immediately next to G.
Frequency (octave 4)
369.99 Hz
MIDI number (octave 4)
66
Also written as
F♯
In key signatures
The 5 flat in the order of flats.

G♭ and its enharmonic spellings

G♭ can also be written as F♯. These are enharmonic equivalents: the same pitch, the same key on the piano, a different name on the page. Which spelling is correct depends on the key and on how the note functions, not on the sound.

G♭ frequency in every octave

Frequencies for G♭ in scientific pitch notation, with A4 tuned to 440 Hz.

NoteMIDIFrequency
G♭13046.25 Hz
G♭24292.5 Hz
G♭354185 Hz
G♭466369.99 Hz
G♭578739.99 Hz
G♭6901479.98 Hz
G♭71022959.96 Hz

Chords on G♭

The most common chords built with G♭ as the root.

See every G♭ chord

Piano Companion
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Chords, Scales & Progressions

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Scales starting on G♭

Keys and scales that use G♭ as their tonic.

All notes

Sıkça sorulan sorular

Where is G♭ on the piano?

G♭ is a black key, immediately next to G.

What frequency is G♭4?

G♭4 sounds at 369.99 Hz with A4 tuned to 440 Hz.

What is another name for G♭?

G♭ can also be written as F♯. They are the same pitch spelled differently.