Chord · 7ths
Gdim7 — G Diminished 7th
Gdim7 is the G diminished 7th chord. It is built on the root G with minor 3rd (B♭), diminished 5th (D♭) and diminished 7th (F♭) above it — the formula 1 ♭3 ♭5 𝄫7, sounding the notes G B♭ D♭ F♭. On the piano it sits at G (octave 4) and above in the library's voicing; the same 4 notes in any octave are still Gdim7.
- Root
- G
- Quality
- Diminished 7th
- Formula
- 1 ♭3 ♭5 𝄫7
- Notes
- G B♭ D♭ F♭
On the keyboard
Right-hand fingering for this voicing: 1–2–3–5 (1 is the thumb).
The notes of Gdim7
| Degree | Note | Interval from the root | Pitch |
|---|---|---|---|
| 1 | G | root | G4 |
| ♭3 | B♭ | minor 3rd | B♭4 |
| ♭5 | D♭ | diminished 5th | D♭5 |
| 𝄫7 | F♭ | diminished 7th | F♭5 |
Other 7ths on G
Diminished 7th chords on every root
Part of the chord reference. See also the scales and the keys.