Fm7b5 Chord On The Guitar (F Minor 7 Flat 5, F Half Diminished) – Diagrams, Finger Positions and Theory

The Fm7b5 chord (F minor 7 flat 5, or F half diminished) contains the notes F, Ab, Cb and Eb, which is the 1 (root) b3, b5 and b7 of the F Major scale. It can be viewed as an Fm7 chord with a flat 5 or an F diminished chord with an added b7.

The half diminished chord can sound like a very dissonant chord, when played in isolation. However, when played in the context of other chords, it can sound beautiful. Fm7b5 is the 7th chord in the key of F Major. Try playing a Gb chord, then an Fm7b5 chord and then return to Gb. This is an example of how Fm7b5 can sound beautiful in context.

The Fm7b5 chord is most commonly played with the root note on the 8th fret of the 5th string (2nd shape down, in the picture below).

10 Ways To Play The Fm7b5 Chord

If you’ve come to this page just to view some chord diagrams for Fm7b5 (F half diminished), here they are.

Fm7b5 Chord 10 Shapes

Some Quick Fm7b5 Chord Theory

  • The F minor 7 flat 5 chord contains the notes F, Ab, Cb and Eb.
  • The Fm7b5 chord is produced by playing the 1st (root), flat 3rd, flat 5th and flat 7th of the F Major scale.
  • The F minor 7 flat 5 chord (just like all half diminished chords) contains the following intervals (from the root note): minor 3rd, minor 3rd, Major 3rd, Major 2nd (back to the root note).
  • Fm7b5 is an F diminished chord, with an added flat 7th (Eb) included, or a Fm7 chord with the 5th lowered by a semitone.
  • Fm7b5 is the 7th chord in the key of Gb.
  • The F locrian mode can be used when soloing over the Fm7b5 chord.

Further Reading

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