C major ninth piano chord - Cmaj9

The C major ninth chord is a 5-note chord consisting of the notes C, E, G, B and D.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as Cmaj9.

Interactive piano diagram for the C major ninth chord

Piano keyboard displaying the C major ninth chord with the notes B# C Fb E G Cb B D

Extended Chords

Chords that are a superset of Cmaj9. The chords include more notes but always C, E, G, B and D.

Reduced chords

Chords that are a subset of Cmaj9. These contain less notes but all of them are included in Cmaj9.

C major ninth piano chord chart image

In case you prefer a non-interactive variant of the chord chart, we've embedded a PNG image below that shows the notes for the the Cmaj9 chord. Feel free to save or share the image as needed.

Piano chord chart for the C major ninth chord (Cmaj9). The notes C, E, G, B and D are highlighted.