Reading Notes on the Fretboard

Every note on the bass fretboard is measured from the open strings. In standard 4-string bass tuning, the strings from lowest to highest pitch are E, A, D, G — memorize this order. The low E is the thickest string; the G is the thinnest. When you pluck an open string you hear that string's open note; the 3rd fret of the low E string, for example, is G.

Each fret raises a string's pitch by one semitone (half step). The twelve notes cycle in chromatic order: C, C♯, D, D♯, E, F, F♯, G, G♯, A, A♯, B, then back to C. Notice there is no sharp or flat between E and F, or between B and C. Starting from any open string and counting frets up the chromatic scale names every note on that string — the open low E followed by frets 1, 2, 3 gives F, F♯, G.

To find a specific note, count semitones from the open string. Want D on the A string? A is the open note and D sits 5 semitones above A, so D lives at the 5th fret. Want C on the G string? G to C is 5 semitones (G → A♭ → A → B♭ → B → C), so C is at the 5th fret of the G string. This counting method works identically on any stringed instrument — only the open-string starting notes change.

Every note repeats at the 12th fret, one octave higher: the 12th fret of any string is the same letter as the open string. You can also find octaves across strings. Because the 4 strings of a bass are all tuned a perfect fourth apart, the octave shape is consistent everywhere on the neck: the same note you find at one fret on a lower string sits two frets lower (toward the headstock) on the next higher string. For example, the 7th fret of the low E (B) and the 5th fret of the A string (also B, one octave higher) make a reliable octave pair you can move to any position.

Fretboard fluency comes from connecting note names to physical locations until it becomes automatic. Use the interactive fretboard quiz below to practice finding notes at marked positions, then explore the full fretboard note map and the Note Finder tool to look up any position. Once you can name notes quickly, every later lesson — chord construction, progressions, and arpeggios — becomes dramatically easier.