Fm7♭5
Half-dim · F – G♯ – B – D♯
- FR
- G♯m3
- B♭5
- D♯♭7
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the Fm7♭5 chord
The Fm7♭5 chord (Half-dim) is built from F (the root), G♯ (a minor third), B (a diminished fifth) and D♯ (a minor seventh). Half-diminished chords are moody and jazzy — most often the ii chord in a minor key.