Chord · Triads

Gdim — G Diminished

Gdim is the G diminished chord. It is built on the root G with minor 3rd (B♭) and diminished 5th (D♭) above it — the formula 1 ♭3 ♭5, sounding the notes G B♭ D♭. On the piano it sits at G (octave 4) and above in the library's voicing; the same 3 notes in any octave are still Gdim.

Root
G
Quality
Diminished
Formula
1 ♭3 ♭5
Notes
G B♭ D♭

On the keyboard

Gdim on the piano keyboard: G B♭ D♭135GB♭D♭

Right-hand fingering for this voicing: 1–3–5 (1 is the thumb).

The notes of Gdim

DegreeNoteInterval from the rootPitch
1GrootG4
♭3B♭minor 3rdB♭4
♭5D♭diminished 5thD♭5

Other triads on G

Diminished chords on every root

Part of the chord reference. See also the scales and the keys.