Dim chords

The dim (diminished) chords are quite uncommon, but it’s still good to be familiar with this chord category. If you play a dim chord you will hear that these chords lack harmony and this is because of the structure of the notes.


A common function for these chords is to be used as a chromatic transposition chord, like an in-between chord, also called a passing chord – this is most common in jazz. If you are interested in the theory, the dim chord consists of a flatten third and a fifth besides the root. If we compare the structure of a C major and a Cdim the notes are C - E - G (C major) and C - Eb - Gb (Cdim). A diminished chord can be written with an abbreviation "dim" (Cdim) or a symbol "º" (Cº).

The easiest way to learn dim chords is to memorize two movable shapes. Below you can see the shapes for dim and dim7. The lowest note is the root (see list below for full overview).

Dim shape

  • dim chord diagram

Dim7 shape

  • dim7 chord diagram

Overview

All diminished and diminished 7th chords with same movable shapes listed and written in short notation.

Cdim - X 3 4 5 4 X
Ddim - X 5 6 7 6 X
Edim - X 7 8 9 8 X
Fdim - 1 2 3 2 X X
Gdim - 3 4 5 4 X X
Adim - 5 6 7 6 X X
Bdim - 7 8 9 8 X X

 

Cdim7 - X X 10 11 10 11
Ddim7 - X X 0 1 0 1
Edim7 - X X 2 3 2 3
Fdim7 - X X 3 4 3 4
Gdim7 - X X 5 6 5 6
Adim7 - X X 7 8 7 8
Bdim7 - X X 9 10 9 10

The chords including C#/Db, D#/Eb, F#/Gb, G#/Ab and A#/Bb are neglected, but you can easily find the right chord shapes for these. See fretboard for more information.

Dim chords

Cdim

  • Cdim chord diagram

Ddim

  • Ddim chord diagram

Edim

  • Edim chord diagram

Fdim

  • Fdim chord diagram

Gdim

  • Gdim chord diagram

Adim

  • Adim chord diagram

Bdim

  • Bdim chord diagram

More chords

None for the moment in this category

Comment

Concerning the "non-movable" open and closed dim chords, in some cases an alternative bass note is used for making the chords easier to play. The diagram that shows Cdim is more correctly written as Cdim/Eb. The diagram that shows Edim includes a Db note, which is not fully correct, but is a practical solution in this case.

More chords

More dim chords in open positions.

A#dim / Bbdim - X1X020

Chord progressions with dim chords

The typical function of a dim chord in sequences is as a passing chord. In other words, you often don't stay long on a dim chord.

Gm - Cm - D - Gm - Cdim - Gm

Ab - Dbm - Adim

Back to chord types

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