Cdim7
C diminished seventh
Notes
C – E♭ – G♭ – B𝄫
Formula
1 – ♭3 – ♭5 – ♭♭7
A diminished triad with a diminished seventh — three stacked minor thirds.
To build Cdim7, start on C and stack the intervals ♭3, ♭5, ♭♭7 above it.
On piano
On guitar
Shapes generated and checked against the chord engine, standard tuning.
x–3–4–2–4–xOpen in Explorer
✕Muted
Fret 4
Fret 2
Fret 4
Fret 3
✕Muted
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8–9–7–8–x–xOpen in Explorer
✕Muted
✕Muted
Fret 8
Fret 7
Fret 9
Fret 8
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x–x–10–11–10–11Open in Explorer
Fret 11
Fret 10
Fret 11
Fret 10
✕Muted
✕Muted
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