C Half-Diminished (Cm7b5) Chord Guitar

A moveable half-diminished barre — the ii of B♭ minor.

A moveable half-diminished barre rooted on the A string.
The ii chord of B♭ minor in this position.
The workhorse jazz voicing for half-diminished chords.
Learn it once and slide it to any root.

Root3rd5th7th

Not played

E6th string

FretMuted

Finger—

Root

ABass5th string

Fret3

Finger1 index

5th

D4th string

Fret4

Finger3 ring

7th

G3rd string

Fret3

Finger1 index

3rd

B2nd string

Fret4

Finger4 pinky

Not played

e1st string

FretMuted

Finger—

NotesC – F# – A# – D#

Formula1 – ♭3 – ♭5 – ♭7

Voicingx3434x

TonesC×1·D#×1·F#×1·A#×1

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Load C Half-Diminished (Cm7b5) onto an interactive fretboard, hear every note, and build it into a progression.

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Questions about C Half-Diminished (Cm7b5)

What notes are in a C Half-Diminished (Cm7b5) chord?

A C Half-Diminished (Cm7b5) chord contains the notes C, F#, A#, D#. It is built from the half-diminished formula 1 - ♭3 - ♭5 - ♭7, with C as the root.

Can I move the Cm7b5 shape to other roots?

Yes — it's a fully moveable shape with its root on the A string, so sliding it up two frets gives Dm7b5, up to the 5th fret gives Dm7b5, and so on. Because it uses no open strings, the same grip produces a half-diminished chord for any root you place the root finger on.

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