Piano Chord Dictionary

How to Use the Piano Chord Dictionary

1. Select a root note (C, D, E, etc.) and chord type (Major, Minor, 7th, etc.).
2. The chord notes are highlighted on the keyboard — the root note in green, other tones in blue.
3. Click Play Chord to hear it, or click individual keys to play single notes.
4. Choose an inversion to see different voicings of the same chord.
5. Use the Quick Chord Select grid below for fast access to common chords.

Chord Types Explained

Triads are 3-note chords: Major (1-3-5), Minor (1-b3-5), Diminished (1-b3-b5), Augmented (1-3-#5), Sus2 (1-2-5), Sus4 (1-4-5).

Seventh chords add a 4th note: Major 7th (1-3-5-7), Minor 7th (1-b3-5-b7), Dominant 7th (1-3-5-b7), Diminished 7th (1-b3-b5-bb7), Half-Diminished (1-b3-b5-b7).

Extended chords go beyond the 7th: 9th chords add the 9th (2nd an octave up), Add9 adds just the 9th without the 7th, and 6th chords replace the 7th with the 6th.