7th Chords
G Half-Diminished 7th chord
A diminished triad with a minor seventh, also written m7♭5. The classic ii chord of a minor key ii–V–i.
Notes in G Half-Diminished 7th
| Note | Interval | Semitones from root |
|---|---|---|
| G | Root | 0 |
| A# | Minor 3rd | 3 |
| C# | Tritone | 6 |
| F | Minor 7th | 10 |
Formula: 0–3–6–10 semitones above the root. Move the whole shape up or down and you get the same chord in another key — that is why Half-Diminished 7th chords sound alike no matter where they start.
Other chords on G
Want to hear G Half-Diminished 7th inside a progression? Load a key in the chord progression generator or browse the scales reference.
Practise this chord by ear
ChordCraft Lab turns this reference into practice: daily chord puzzles, adaptive quizzes and ear training on a playable keyboard. 14-day free trial, then $7/month.
Start free trial