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D Diminished Chord

The D diminished chord (Ddim) contains D, F and A♭. Use the keyboard diagram to see the notes, hear the chord and compare root position with its two inversions.

D Diminished Chord Notes & Inversions

D Diminished
Ddim
Chord tones
DFA♭
Formula
1♭3♭5
Notes
D · F · A♭
Quality
Diminished triad
Formula
1 · ♭3 · ♭5
Keyboard range
C3–C6
Position
Notes from low to high
D4F4A♭4
Ddim
Bass: D4
Download Ddim PDF
Simple reference tone; not a recording of an acoustic piano.

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

Preserve the written note spelling shown for this chord.

Choose a position to keep the written notes, sounding keys, bass note, playback and print reference synchronized.

How the D Diminished Chord Is Built

Ddim uses 1–♭3–♭5: D–F–A♭.

D Diminished vs D Minor

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

D Diminished Chord Inversions

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

D Diminished: root position, first inversion, and second inversion
PositionSymbolNotes, low to highBass
Root position, current selectionDdimD4–F4–A♭4D4
First inversionDdim/FF4–A♭4–D5F4
Second inversionDdim/A♭A♭4–D5–F5A♭4
Reference scope

Fingering is not provided for this reference

Fingerings are not included on this page. The diagram shows note positions, not a prescribed hand shape.

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 triad formula and written tone spelling

Scope: Supports the chord formula and spelling only; keyboard layouts are PianoGrid examples, and no fingering is assigned.

D Diminished Chord FAQ

What notes are in Ddim?

D, F, A♭.

What is the formula for Ddim?

1–♭3–♭5.

Does an inversion change the chord root?

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

Interactive practice

Build the D Diminished Chord on Piano

Select the three pitch classes that make Ddim, 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 the D Diminished Chord Reference

Download Ddim PDF