Guitar lesson
How to Read Guitar Chord Charts (Diagrams Explained)
Learn to read guitar chord charts and diagrams — strings, frets, dots, finger numbers, X and O symbols, and barre notation, explained for complete beginners.
Chord diagrams look like cryptic grids the first time you see one, but the whole system takes five minutes to learn — and every chord page on this site uses exactly the same conventions.
The grid itself
A chord diagram is a picture of the fretboard standing upright:
- Six vertical lines are the strings. Left to right: low E, A, D, G, B, high E.
- Horizontal lines are the frets. The thickest line at the top is the nut (the plastic bar by the headstock).
- A number beside the top fret appears when the diagram starts higher up the neck — the shape moves up that many frets.
The orientation is the thing people get wrong first. The diagram is not a top-down view of the guitar in your lap; it is the neck seen face-on, with the low E string on the left, exactly as it looks when you hold the guitar and look at the fretboard.
The symbols
- Filled dot = place a finger here. The dot’s position tells you which string and fret.
- Number inside the dot = which finger: 1 index, 2 middle, 3 ring, 4 pinky.
- O above a string = play the string open (no finger).
- X above a string = don’t play that string — mute it or skip it.
- A curved bar = a barre: one finger (almost always the index) presses all the marked strings at that fret.
Some charts also show a T for thumb (common in fingerstyle arrangements) and occasionally a 1–5 number where 5 means the little finger has been replaced by a small barre.
Reading your first diagram
Take E minor, one of the easiest chords:
- The diagram shows dots on the A string fret 2 and D string fret 2, numbered 2 and 3.
- All other strings show O — everything rings open.
- Result: middle finger on A string fret 2, ring finger on D string fret 2, strum all six strings.
Now read D major the same way: two X marks (low E and A), an O on the D string, and three dots on frets 2, 3 and 2 across the G, B and high E strings. The X marks are the instruction most beginners ignore, and strumming those two low strings is the single most common reason a D chord sounds muddy.
Reading a diagram that starts up the neck
When a shape sits above fret 4, the diagram stops drawing the nut and puts a number at the top left instead. A diagram labelled 5 with dots on the 2nd and 4th drawn frets means your fingers go to frets 6 and 8 in real terms, not 2 and 4.
The rule is: the drawn grid is relative, the number is absolute. Read the number first, then count up from it.
Chord symbols decoded
A diagram tells you where to put your fingers. The name above it tells you what the chord is, and the suffixes are a compressed language of their own:
| Symbol | Meaning | Example |
|---|---|---|
| C | Major triad, root–3rd–5th | C–E–G |
| Cm | Minor: the third flattened a semitone | C–Eb–G |
| C7 | Dominant seventh: a major triad plus a flat 7th | C–E–G–Bb |
| Cmaj7 | Major seventh: a major triad plus the natural 7th | C–E–G–B |
| Cm7 | Minor seventh: minor triad plus a flat 7th | C–Eb–G–Bb |
| Csus4 | The third replaced by the 4th | C–F–G |
| Csus2 | The third replaced by the 2nd | C–D–G |
| Cadd9 | A major triad with the 9th added, third kept | C–E–G–D |
| C6 | Major triad plus the 6th | C–E–G–A |
| Cdim | Diminished: both third and fifth flattened | C–Eb–Gb |
| Caug | Augmented: the fifth raised | C–E–G# |
| C/G | A C chord with G as the lowest note | slash chord |
| C5 | Power chord: root and fifth only, no third | C–G |
Two of these are easy to confuse and worth separating now: Cmaj7 and Cm are not close relatives. Cmaj7 is bright and jazzy, Cm is dark. The seven appears in both names; the “maj” refers to the seventh, not the third.
From diagram to chord chart
A chord chart is the next level up: instead of one chord’s fingering, it shows
a song’s chords in sequence — usually written above the lyrics or as a compact
progression line like C – G – Am – F.
Three conventions make song sheets readable:
- One chord per bar unless told otherwise. A line of four chords usually means four bars, four beats each.
- A repeat sign or a bracket means play that section again rather than reading new chords.
- Section labels (Intro, Verse, Chorus, Bridge) tell you which part of the song you are in, and songs reuse them far more than beginners expect.
Worked example: Wonderwall is charted with a capo at fret 2 and four chords — Em7, G, Dsus4 and A7sus4 — plus Cadd9 in the bridge. Read the chart and you see the same four-chord loop in the verse and the chorus, which is why the song is so easy to play and so hard to stop playing.
Common confusions
| What you see | What people assume | What it actually means |
|---|---|---|
| X on the low E | “Mute it with the left hand” | Either mute it or simply avoid it with the pick |
| A number at the side | “Start counting from the nut” | The number is the starting fret |
| C/E | “Some kind of C chord” | C major with E in the bass, not a different triad |
| 0 in the diagram | “No finger, but I should still press” | Play the string open, nothing touching it |
How to practise reading
Open any song page on this site and work through it one bar at a time, saying the chord names out loud before you play them. Reading speed is a separate skill from playing speed, and it improves fast because you are training recognition rather than muscle.
If a shape on a chart looks unfamiliar, the fastest way to decode it is the chord identifier: put in the frets you are playing and it names the chord, which is the same skill in reverse.