Fm7b5 Halbvermindert Akkord

Diminished triad with a minor seventh. Common in jazz as the ii chord in minor keys.

Fm7b5 Akkord — Quick Answer & Harmonic Definition

The Fm7b5 (Half-Diminished 7th) chord consists of the notes F, G#, B, D#. It is constructed from the root note F using the half-diminished 7th interval formula (0–3–6–10 semitones).

Formula: 0 – 3 – 6 – 10
Notes
F – G# – B – D#
Intervals (semitones)
0 – 3 – 6 – 10
Type
7th Chord

Fm7b5 on Piano

Press highlighted keys simultaneously to play the Fm7b5 chord.

R
F (Root (R))
2
G# (Minor 3rd (♭3))
3
B (Tritone (♭5))
4
D# (Minor 7th (♭7))

Fm7b5 on Guitar

The Fm7b5 chord uses notes F, G#, B, D#. Build a voicing by finding these notes on any strings — root on the 6th string is a common starting point for barre chord shapes.

Interval Analysis

Degree Interval Name Semitones Note in F
Root Root (R) 0 F
3rd Minor 3rd (♭3) 3 G#
5th Tritone (♭5) 6 B
7th Minor 7th (♭7) 10 D#

About the F Halbvermindert Chord

The Fm7b5 chord (F Halbvermindert) consists of 4 notes: F, G#, B, D#. Diminished triad with a minor seventh. Common in jazz as the ii chord in minor keys.

To build any half-diminished 7th chord, apply intervals of 0, 3, 6, 10 semitones above the root. Starting from F: the notes land on F, G#, B, D#.

Playing Fm7b5 on Piano

Press F, G#, B, D# simultaneously. In root position, F is lowest. First inversion places G# in the bass for a lighter sound; second inversion uses B as the bass note.

Common Chord Progressions Using Fm7b5

  • I–IV–V: Fm7b5 – A#m7b5 – Cm7b5 (blues and rock)
  • I–V–vi–IV: Fm7b5 – C – Dm – A# (pop staple)
  • I–vi–IV–V: Fm7b5 – Dm – A# – C (50s progression)

The Fm7b5 Chord in Context

The Fm7b5 (Halbvermindert) chord features a distinctive diminished triad with a minor seventh. common in jazz as the ii chord in minor keys. built from the intervals 0–3–6–10. It provides rich harmonic color and tension across pop, jazz, classical, and contemporary compositions.

Other F Chords

F
Major
Fm
Minor
F7
Dominant 7th
Fmaj7
Major 7th
Fm7
Minor 7th
Fdim
Diminished

Halbvermindert Chord in All 12 Keys

Cm7b5 C#m7b5 Dm7b5 D#m7b5 Em7b5 Fm7b5 F#m7b5 Gm7b5 G#m7b5 Am7b5 A#m7b5 Bm7b5
Virtual Piano
Play Fm7b5 on piano
Virtual Guitar
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F Scale
Notes that fit Fm7b5
Songs
Find songs using Fm7b5

Knowledge Base & FAQs

Fm7b5 Chord — Frequently Asked Questions

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

What notes are in the Fm7b5 chord?

The F Halbvermindert chord contains: F, G#, B, D#.

These notes are derived by applying the half-diminished 7th interval formula (0–3–6–10 semitones) to the root note F.

What is the Fm7b5 chord used for?

Diminished triad with a minor seventh.

Common in jazz as the ii chord in minor keys. The Fm7b5 chord is used across pop, rock, jazz, and classical music. As the I chord in the key of F major, it functions as the most stable resting point in progressions.

How do you play Fm7b5 on piano?

On piano, play F, G#, B, D# simultaneously.

In root position, F is the lowest note. Inversions move the bass note up — first inversion has G# lowest, second inversion has B lowest.

How many notes are in a half-diminished 7th chord?

A half-diminished 7th chord has 4 notes: F, G#, B, D# (in F).

It is a 7th chord, extending beyond the basic triad.

What is the difference between F major and F minor?

The F major chord (F–A–C) uses a major third (4 semitones), giving it a bright, happy sound.

The F minor chord (F–G#–C) uses a minor third (3 semitones), giving it a darker, emotional sound.

What key does Fm7b5 belong to?

Fm7b5 naturally serves as the I chord in the key of F major.

It also appears as IV in the key of C major, and as V in the key of A# major.

Can I play Fm7b5 on ukulele?

Yes.

The ukulele uses GCEA tuning with 4 strings. The Fm7b5 chord notes (F, G#, B, D#) can be fretted on a ukulele, though the shapes differ from guitar due to the 4-string layout and shorter scale.

What chords go well with Fm7b5?

In the key of F major, Fm7b5 pairs naturally with A# major (IV), C major (V), and Dm (vi).

The classic I–IV–V (Fm7b5–A#–C) is the foundation of blues, country, and rock.

What is a chord inversion of Fm7b5?

An inversion places a non-root note in the bass.

Fm7b5 root position: F in bass. First inversion: G# in bass. Second inversion: B in bass. Inversions create smoother bass line movement without changing the harmony.

How do I memorize the notes in a half-diminished 7th chord?

Remember the formula: 0–3–6–10 semitones from root.

For Fm7b5: start on F, add 3 semitones, then 6 semitones, then 10 semitones. Practicing this across all 12 roots builds instant recognition of any half-diminished 7th chord.