F#° (Diminished)

Gb · A · C · 3 notes

Chord

Formula: R – ♭3 – ♭5

Gb R

A ♭3

C ♭5

Bass note: Gb

Key	Degree
G Major	vii°
E Minor	ii°

The F#° chord is a diminished chord built on F#. It consists of the notes Gb, A, C (scale degrees R, ♭3, ♭5).

Diminished chords stack two minor 3rds (3+3 semitones), creating a tense, unresolved sound. They typically appear as the vii° in major keys.

Use the Key Finder to find what key these notes belong to, or the Progression Builder to use this chord in a sequence.