Quick Answer & Harmonic Definition

To play the C Diminished chord on guitar, find the notes C, D#, F# across the fretboard. The root C typically goes on the 6th or 5th string. Use the interactive fretboard above to see exact finger placement for this triad chord shape.

Guitar Chord

Cdim Guitar Chord

Built from two stacked minor thirds. Creates maximum tension and instability. Learn the C Diminished chord on guitar with interactive fretboard, audio playback, and multiple voicings.

Notes
C – D# – F#
Intervals
0 – 3 – 6
Type
triad chord
C D# F#
E
A
D
G
B
e
3
5
7
9
12
3 notes · Standard (E A D G B E)

Playing the Cdim Guitar Chord

The Cdim chord is a diminished chord built on the root C. It contains 3 notes: C, D#, F#. On guitar, this chord can be played in multiple positions across the fretboard, from open shapes to barre chord voicings.

Built from two stacked minor thirds. Creates maximum tension and instability. For guitarists, mastering the Cdim chord unlocks many songs in the key of C.

Recommended Cdim Guitar Voicing

The interactive fretboard above shows a practical Cdim voicing. The chord notes (C, D#, F#) appear as highlighted positions. Tap any highlighted fret to hear that note, or click "Play Cdim" to hear the full chord.

Interval Structure of Cdim

Degree Interval Semitones Note in C
Root Root (R) 0 C
3rd Minor 3rd 3 D#
5th Tritone 6 F#

Common Progressions with Cdim on Guitar

  • I–IV–V: Cdim – Fdim – Gdim (foundation of blues and rock)
  • I–V–vi–IV: Cdim – G – Am – F (modern pop staple)
  • I–vi–IV–V: Cdim – Am – F – G (50s doo-wop)

Tips for Practicing Cdim on Guitar

Start by finding the root note C on the 6th and 5th strings. Build the chord shape from there. Practice transitioning between Cdim and nearby chords like F and G. Use slow, deliberate strums and check each string rings clearly.

Other C Guitar Chords

C
Major
Cm
Minor
C7
Dominant 7th
Cmaj7
Major 7th
Cm7
Minor 7th
Caug
Augmented

Diminished Chord in All 12 Keys

Cdim C#dim Ddim D#dim Edim Fdim F#dim Gdim G#dim Adim A#dim Bdim
Virtual Guitar
Interactive fretboard
Cdim Piano
Piano chord diagram
C Scale
Notes that fit this chord
Songs
Find songs using Cdim

Knowledge Base & FAQs

Cdim Guitar Chord — FAQ

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

How do I play the Cdim chord on guitar?

To play the C Diminished chord on guitar, find the notes C, D#, F# across the fretboard.

The root C typically goes on the 6th or 5th string. Use the interactive fretboard above to see exact finger placement for this triad chord shape.

What notes make up the Cdim guitar chord?

The C Diminished guitar chord contains 3 notes: C, D#, F#.

These are derived from the diminished interval formula applied to the root C.

What is the best guitar voicing for Cdim?

The most common guitar voicing for Cdim uses a root position with C on the 6th or 5th string.

The exact frets depend on your preferred voicing — the interactive fretboard above shows a recommended open or barre position shape.

Is Cdim a beginner-friendly guitar chord?

Cdim is a triad, making it accessible for beginners.

Focus on clean fretting of each 3 notes and strumming only the target strings.

What is a barre chord version of Cdim?

A barre chord version of Cdim uses your index finger pressed across all strings at a specific fret, with the remaining fingers forming the chord shape.

The root C determines the barre position on the 6th or 5th string.

What are common chord progressions with Cdim on guitar?

Cdim is widely used in jazz ii–V–I turnarounds, blues progressions, and modal funk vamps.

How does Cdim sound different on guitar vs piano?

The Cdim chord contains the same notes (C, D#, F#) on both instruments.

On guitar, the voicing depends on string selection and fret position, creating a different timbre. Guitar chords often include string-specific articulations like hammer-ons and pull-offs.

Can I play Cdim as an open chord on guitar?

Open voicings of Cdim require C to be playable within the first 3 frets.

If open shapes aren't available, use a barre chord voicing instead.

What is the difference between the Cdim chord on guitar and ukulele?

The Cdim chord contains the same notes (C, D#, F#) on both instruments.

However, the guitar has 6 strings in EADGBE tuning while the ukulele has 4 strings in GCEA tuning, so the finger shapes are completely different.

How do I practice transitioning to and from Cdim on guitar?

Practice moving between Cdim and its neighboring chords in the key of C major: F and G.

Use a metronome at a slow tempo (60 BPM) and focus on clean, simultaneous finger placement.