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
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.
| Note | MIDI | Frequency |
|---|---|---|
| G♭1 | 30 | 46.25 Hz |
| G♭2 | 42 | 92.5 Hz |
| G♭3 | 54 | 185 Hz |
| G♭4 | 66 | 369.99 Hz |
| G♭5 | 78 | 739.99 Hz |
| G♭6 | 90 | 1479.98 Hz |
| G♭7 | 102 | 2959.96 Hz |
Chords on G♭
The most common chords built with G♭ as the root.
Scales starting on G♭
Keys and scales that use G♭ as their tonic.
All notes
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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.
