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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

E6th

FretMuted

Finger—

A5th

Fret3

Finger3

D4th

Fret4

Finger4

G3rd

Fret2

Finger2

B2nd

Fret1

Finger1

e1st

FretMuted

Finger—

Notes: F# – C – A · Formula: 1 – ♭3 – ♭5

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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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