F#dim7: guitar chord voicings, inversions, scales and arpeggios

F#dim7 (Dim7) is an interactive GuitarArcanum page with chord formula, intervals, voicings, inversions, triads, pentatonic patterns, scales and arpeggios on the fretboard.

Chord formula

Interval formula: 1 b3 b5 bb7. A diminished 7th — four notes stacked in minor thirds. A tense, symmetric chord that pulls to a resolution.

Chord tones

The chord is built entirely from minor thirds, so it's symmetric: it splits the octave into equal parts. Inside are two tritones — hence the strong tension.

Sound character

Tense, anxious and dramatic — the classic 'suspense' chord.

Harmonic function

Most often a leading-tone or passing chord that pulls to the tonic. By symmetry, one shape serves four different dim7 chords.

Typical progressions

F# – Gdim7 – G#m7
Fdim7 → C
passing dim7

Guitar voicing advice

One shape repeats every three frets (symmetry). Handy from the 5th and 4th strings as a passing chord.

Fretboard voicings for F#dim7

A few curated F#dim7 shapes with fret numbers, intervals and root markers.

F#dim7 — Drop 2, root on 6th string, frets 0–4

F#dim7 — Drop 2, root on 5th string, frets 7–11

F#dim7 — Drop 2, root on 4th string, frets 3–6

Compatible scales for F#dim7

Open interactive scale pages that naturally pair with this chord.

Other chord qualities on the F# root

Compare this chord with other qualities sharing the same root.