This chord has 4 voicings across the fretboard. Use the arrows to see each shape and fingering — and tap any dot on the diagram to hear that note.
C#m7♭5 Guitar Chord
A half-diminished seventh chord with a dark, restless quality. C#m7♭5 appears naturally in minor keys and is essential for jazz ii-V-i progressions.
Also known as
- C#ø
- Dbø
- C# ø
- C#ø7
- Db ø
- Dbø7
- C# ø7
- Db ø7
- C#m7b5
- Dbm7♭5
- Dbm7b5
- C# m7♭5
- C# m7b5
- Db m7♭5
- Db m7b5
- D-flatø
- C-sharpø
- D-flat ø
- D-flatø7
- C-sharp ø
- C-sharpø7
- D-flat ø7
- C#half-dim
- C-sharp ø7
- Dbhalf-dim
- D-flatm7♭5
- D-flatm7b5
- C# half-dim
- C#half-dim7
- C-sharpm7♭5
- C-sharpm7b5
- Db half-dim
- Dbhalf-dim7
- D-flat m7♭5
- D-flat m7b5
- C# half-dim7
- C-sharp m7♭5
- C-sharp m7b5
- Db half-dim7
- D-flathalf-dim
- C-sharphalf-dim
- D-flat half-dim
- D-flathalf-dim7
- C-sharp half-dim
- C-sharphalf-dim7
- D-flat half-dim7
- C-sharp half-dim7
- C# half-diminished 7th
- Db half-diminished 7th
- C# half-diminished seventh
- Db half-diminished seventh
- D-flat half-diminished 7th
- C-sharp half-diminished 7th
- D-flat half-diminished seventh
- C-sharp half-diminished seventh
How to Play This Chord
Position your fingers on the fretboard as shown in the diagram. The vertical lines represent the strings, from low E (left) to high E (right), and the horizontal lines are the frets. Numbers inside the dots indicate which finger to use: 1 (index), 2 (middle), 3 (ring), 4 (pinky). An X means don't play that string; an O means play it open. A bar spanning multiple strings means one finger presses across all of them at once — this is known as a barre chord.
Tips & Tricks
This half-diminished chord is the ii chord in the key of B minor. Play it at the 4th fret using the movable m7b5 shape. The voicing can feel awkward at first, so isolate it in a ii-V-i progression (C#m7♭5 → F#7 → Bm) to build familiarity.