F# diminished 7th · Guitar
F#dim7 Chord on Guitar
The F#dim7 chord (F# diminished 7th) is built from the notes F#, A, C and D#. The guitar fingering for it is shown below. The same chord is also written Gbdim7; both spellings sound identical.
Chord diagrams
Fingering
- string 6 (E): muted
- string 5 (A): muted
- string 4 (D): fret 4 — index finger
- string 3 (G): fret 5 — ring finger
- string 2 (B): fret 4 — middle finger
- string 1 (E): fret 5 — little finger
Notes in this chord
- F♯
- A
- C
- D♯
Degrees: 1 – ♭3 – ♭5 – ♭♭7
Also written: Gbdim7
How to play
F#dim7 can be played with open strings on guitar, which makes it an accessible shape for beginners. Strings marked ○ ring open, while strings marked ✕ are muted.
Theory behind the chord
Diminished seventh chords divide the octave into four equal minor thirds. Every inversion sounds the same, so a single shape can be slid up the neck to lead into several different keys. On F#dim7 this structure sits on the root F#, so the degrees 1 – ♭3 – ♭5 – ♭♭7 map onto F#, A, C and D#.
Frequently asked questions
- Which notes are in the F#dim7 chord?
- F#dim7 contains the notes F#, A, C and D#. Relative to the root these are the degrees 1 – ♭3 – ♭5 – ♭♭7.
- How many ways can you play F#dim7?
- Minory lists a single guitar fingering for F#dim7.
- Is the F#dim7 chord hard to play?
- F#dim7 requires a barre, so it can feel demanding at first. Keeping the index finger straight and pressing from the wrist rather than the thumb makes it noticeably easier.
- Are F#dim7 and Gbdim7 the same chord?
- Yes. F#dim7 and Gbdim7 are enharmonically identical — the spelling differs but the frets and keys are the same. Which name is used depends on the key of the piece.
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