G diminished seventh piano chord - Gdim7

The G diminished seventh chord is a 4-note chord consisting of the notes G, Bb, Db and Fb.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Gdim7.

Interactive piano diagram for the G diminished seventh chord

Piano keyboard displaying the G diminished seventh chord with the notes G A# Bb Fb E C# Db

Reduced chords

Chords that are a subset of Gdim7. These contain less notes but all of them are included in Gdim7.

G diminished seventh piano chord chart image

In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the Gdim7 chord. Feel free to save or share the image as needed.

Piano chord chart for the G diminished seventh chord (Gdim7). The notes G, Bb, Db and Fb are highlighted.