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F♯ Diminished (F♯dim) Chord Guitar

A middle-string diminished shape — the vii° of G major.

A different shape to the Bdim family, on the middle four strings.
Both outer strings are muted.
The vii° chord in the key of G major.
Shares its shape with G#dim, two frets apart.

Root3rd5th

Not played

E6th string

FretMuted

Finger—

5th

ABass5th string

Fret3

Finger3 ring

Root

D4th string

Fret4

Finger4 pinky

3rd

G3rd string

Fret2

Finger2 middle

5th

B2nd string

Fret1

Finger1 index

Not played

e1st string

FretMuted

Finger—

NotesF# – C – A

Formula1 – ♭3 – ♭5

Voicingx3421x

TonesF#×1·A×1·C×2

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Questions about F♯ Diminished (F♯dim)

What notes are in a F♯ Diminished (F♯dim) chord?

A F♯ Diminished (F♯dim) chord contains the notes F#, C, A. It is built from the diminished formula 1 - ♭3 - ♭5, with F# as the root.

Why does F♯dim use a different shape to Bdim?

Both are valid diminished voicings — they just sit on different string groups. F♯dim uses the middle four strings, which keeps the chord in a comfortable register and makes it easy to reach from open G-major shapes.

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