Tested tool guide
Tested browser tools
Checked August 16, 2026
What Guitar Chord Diagram Generator does, with a checked example
A guitar chord diagram maps the neck onto a small grid: vertical lines are the six strings, horizontal lines are frets, and dots show where fingers press. Describe a chord as a string-by-string fret pattern such as x32010, and the tool draws it with finger numbers, open and muted markers, and a barre bar when one finger spans several strings. Custom tuning settings relabel the strings so shapes can be reused in drop D or open tunings. The common surprise: the low E string is drawn on the left, so the diagram mirrors the neck as you look down at your guitar, not as an audience sees it.
Worked example
A concrete input and expected output from the current implementation.
Input
C major, standard tuning: x32010
->
Expected output
A neck grid with an x above the low E string (muted), open markers above the G and high E strings, and filled dots at fret 3 on the A string, fret 2 on the D string, and fret 1 on the B string, each dot carrying a finger number. The sounded notes run C, E, G, C, E: a C major triad with the root and third doubled.
Read from the lowest string, x32010 sounds C (3rd fret on the A string), E (2nd fret on the D string), G (open G), C (1st fret on the B string), and E (open high E). Those are exactly the notes of C major, so the diagram is the standard open C shape.