Bdim7
B diminished seventh
Notes
B – D – F – A♭
Formula
1 – ♭3 – ♭5 – ♭♭7
A diminished triad with a diminished seventh — three stacked minor thirds.
To build Bdim7, start on B and stack the intervals ♭3, ♭5, ♭♭7 above it.
On piano
On guitar
Shapes generated and checked against the chord engine, standard tuning.
x–2–0–1–0–1Open in Explorer
Fret 1
OOpen
Fret 1
OOpen
Fret 2
✕Muted
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7–8–6–7–0–xOpen in Explorer
✕Muted
OOpen
Fret 7
Fret 6
Fret 8
Fret 7
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7–8–0–7–9–xOpen in Explorer
✕Muted
Fret 9
Fret 7
OOpen
Fret 8
Fret 7
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