Nashville Number System — Key of C
The complete NNS chart for C Major: all seven diatonic chords with Nashville numbers and Roman numerals.
Key
Nashville Number Chart — Key of C
| Degree | Nashville | Chord |
|---|---|---|
| 1 | 1 | C |
| 2 | 2m | Dm |
| 3 | 3m | Em |
| 4 | 4 | F |
| 5 | 5 | G |
| 6 | 6m | Am |
| 7 | 7dim | Bdim |
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Non-diatonic chords are preserved unchanged.
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Nashville Numbers in the Key of C Major
In the key of C Major, the seven diatonic chords are C, Dm, Em, F, G, Am, Bdim. In Nashville Number System notation, these chords are numbered by their scale degree: the tonic chord C is 1, the subdominant F is 4, and the dominant G is 5. Minor chords use a lowercase “m” suffix — Dm is 2m, Em is 3m, and Am is 6m. The diminished seventh degree, Bdim, is written 7dim.
NNS Reference Chart — C Major
Common Progressions in C Major — NNS Notation
The most common chord progression in C Major is I–V–vi–IV — C, G, Am, F — written in Nashville notation as 1–5–6m–4. Because the NNS uses numbers rather than chord names, this chart works verbatim in any key — a band calling out “1, 5, 6m, 4” knows exactly what to play regardless of the root key. Cross-reference with our chords in the key of C Major for the full diatonic chord set with Roman numeral analysis.
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