1. How to Read the Fretboard Diagrams

Every chord on this site is drawn the same way, so once you can read one diagram you can read all 6,500 of them. The notation is also the standard used in chord books, tab sites, and lesson videos, which means learning it here pays off everywhere else too.

Which way round is it?

The Chord Dictionary draws chords vertically, the way a chord box is printed in almost every songbook. The six vertical lines are the strings, and you are looking at the neck head-on with the headstock pointing up. The thick low E string — the 6th string, the one nearest your chin when you play — is on the left. The thin high e string is on the right. The horizontal lines crossing them are the frets, running down the page as you move up the neck.

If the shape is played at the very start of the neck, the top line is drawn as a thick white bar. That bar is the nut, and it tells you the shape uses open strings. If the shape sits higher up, the nut disappears and a small number appears to the left of the diagram instead: a 5 there means the top row of the box is the 5th fret, not the 1st. Missing that number is the single most common way to learn a chord in the wrong position.

The Chord Finder uses a horizontal fretboard instead, because there you are hunting across the whole neck rather than reading one shape. On that board the low E string is along the bottom and the nut is on the left, which is how the neck looks when you lay the guitar flat on your lap.

The symbols above the strings

• O — play this string open. Don't fret it, just let it ring as part of the chord.
• X — don't let this string sound. Either skip it when you strum or, more reliably, let a finger already on the neck lean against it so it can't ring.
• (O) — this string works either way. Some voicings sound complete whether you include a particular open string or leave it out, and rather than print two nearly identical diagrams the dictionary marks the string as optional. Play it, mute it, or use it as a strumming target you don't have to be precise about.

The numbers inside the dots

Each dot carries the finger suggested for that note: 1 is your index, 2 your middle, 3 your ring, 4 your little finger. A T means your thumb comes over the top of the neck to fret the low E string — an ordinary technique in blues, folk, and neo-soul playing, and sometimes the only way a shape works at all.

When one finger presses several strings at once, the dots are joined by a bar in that finger's colour. Usually that is the index finger making a barre, but not always — flattening the ring finger across two or three strings is common in dominant and diminished shapes, and the diagram shows that the same way.

The fingerings here are not decorative. Every shape in the dictionary has been checked against what a hand can physically do: one finger cannot press two different frets, a barre cannot cross a string that has to stay silent, and the thumb only reaches the 6th string. Shapes that fail those tests were removed rather than printed with a fingering nobody could use.

Reading the shape, not just the dots

The dots tell you where to put your fingers, but the useful skill is seeing why the shape works. In the dictionary, the notes of the current chord are listed above the diagrams, and the root note is drawn in a different colour from the rest. Once you can spot the root, you start to notice patterns: the same interval shape repeating in different places, the reason a chord sounds thin when the root is missing, why one voicing feels heavier than another.

The Show Notes button in the Chord Finder takes this further by naming every note on the whole neck at once. Turn it on, hold a shape you already know, and you can see exactly which scale degrees you are playing and where the same notes live elsewhere.

A quick way to get fluent

Pick three chords you can already play without thinking — a G, a Dm, whatever your hands know — and look each one up. Check that the diagram matches what your fingers are doing: the same strings open, the same strings skipped, the same fingers on the same frets. You will occasionally find the dictionary suggests a different fingering from the one you learned, and that is worth investigating, because a fingering is usually chosen to make the next chord easier to reach.

After that, unfamiliar shapes stop being puzzles. A diagram is just a map, and you already know how to read this one.