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G Diminished Piano Chord

The G Diminished chord contains G, B♭, D♭. Formula: 1–♭3–♭5.

G Diminished keyboard and inversions

G Diminished
Gdim
Chord tones
GB♭D♭
Formula
1♭3♭5
Notes
G · B♭ · D♭
Quality
Diminished triad
Formula
1 · ♭3 · ♭5
Keyboard range
C3–C6
Position
Notes from low to high
G3B♭3D♭4
Gdim
Bass: G3
Download Gdim PDF
Simple reference tone; not a recording of an acoustic piano.

The g diminished triad uses a root, minor third and diminished fifth.

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G Diminished formula

Gdim uses 1–♭3–♭5: G–B♭–D♭.

The g diminished triad uses a root, minor third and diminished fifth.

Compare G Diminished

Compared with G minor, lower the fifth by one semitone.

G Diminished inversions

The chord tones stay the same while the lowest chord tone changes.

G Diminished: root position, first inversion, and second inversion
PositionSymbolNotes, low to highBass
Root position, current selectionGdimG3–B♭3–D♭4G3
First inversionGdim/B♭B♭3–D♭4–G4B♭3
Second inversionGdim/D♭D♭4–G4–B♭4D♭4
Reference scope

Fingering is not provided for this reference

No independent fingering dataset is authorized for N2B.

Use the written notes, keyboard positions and playback without treating the diagram as a required hand shape.

Read left- and right-hand finger numbers
Sources and scope

Triads — Open Music Theory

Open Music Theory

Supports: diminished = minor third + diminished fifth; augmented = major third + augmented fifth; triad spelling principles

Scope limit: Theory and spelling cross-check only; no source prose, artwork, fingering or PDF is copied.

Checked 2026-09-12 · N2B-OMT-TRIADS

The Piano Chord Collection — Diminished & Augmented

PianoChord.org

Supports: competitor family coverage; cross-check examples only

Scope limit: Theory and spelling cross-check only; no source prose, artwork, fingering or PDF is copied.

Checked 2026-09-12 · N2B-PC-COLLECTION

Questions about Gdim

What notes are in Gdim?

G, B♭, D♭.

What is the formula for Gdim?

1–♭3–♭5.

Does an inversion change the chord root?

No. The root stays the same; the lowest chord tone changes.

Interactive practice

Build Gdim on the keyboard

Select the three pitch classes that make Gdim, then check your answer.

This one-octave exercise checks pitch classes. Order and octave do not affect the result; fingering and live performance are not assessed.

3Choose three pitch classes

One octave, C through B. Select a key again to remove it.

One-octave keyboard from C through B
Selected: none
Choose notes, then check your answer.

Print this chord reference

Download Gdim PDF