MARS Studio — reference

CHORD LAB

seventh & ninth chord tones across the fretboard, standard tuning
01  — root
02  — chord type
Sevenths
Ninths
C Major 7
C — E — G — B
every dot is a chord tone somewhere on the neck, not one fixed fingering — filled = fretted, ringed = open string. root shown in red.
Full reference — root C
ChordFormulaNotes