Bass Guitar Notes: How to Find Any Note on the Fretboard

A four-string bass with 20 frets has 84 note positions. Nobody memorises 84 of anything. Players who seem to know the fretboard are using about four reference points and three shapes, and deriving the rest in the moment.

The open strings

Standard tuning, lowest to highest: E, A, D, G. Those are the same letters as the bottom four strings of a guitar, one octave lower. If you have played any guitar, the geometry transfers intact — the shapes you already know are in the same places.

The low E is E1, around 41 Hz. That is low enough that many tuners built for guitar misread it or refuse to lock on, which is worth knowing before you blame your ears. The OpenFret tuner tracks down to E1 in the browser.

The four reference points

Learn where the dots are, not where the notes are. On almost every bass, markers sit at frets 3, 5, 7, 9, and a double marker at 12.

Fret 12 is the one that pays for itself: it is always the open string an octave up. Twelfth fret on the E string is E. On the A string, A. That single fact splits the neck into two identical halves, so everything you learn below fret 12 you get again above it for free.

Fret 5 is the second freebie. On every string except the G, fret 5 gives you the note of the next string up — fret 5 of E is A, fret 5 of A is D, fret 5 of D is G. That is also why the five-fret method works for tuning by ear.

Shape 1: the octave

From any note, go two frets up and two strings toward the higher strings, and you have the same note an octave higher. Third fret of the E string is G; fifth fret of the D string is also G.

This is the single most useful shape on the instrument. It doubles every note you know, it works identically anywhere on the neck, and it is the backbone of countless bass lines on its own.

Shape 2: the same note, one string over

Adjacent bass strings are a fourth apart, which means the same note reappears five frets lower on the next string up. The G at fret 15 of the E string is the same G at fret 10 of the A string. Subtract five, move over one.

You will use this constantly to avoid jumping around the neck. Most awkward bass lines become easy once you find the version that stays in one position, and this is the shape that finds it.

Shape 3: the fifth

Two frets up, one string across gives you the fifth — the note that fits under almost any chord built on your root. Root and fifth together is a complete bass part for entire genres of music, country and punk especially.

Putting it together

Say you need a C. You know fret 3 of the A string is C, because it is three semitones above A. From there the octave shape gives you the C at fret 5 of the G string, and the fifth shape gives you the G that goes with it. One anchor, three notes, no memorisation.

The OpenFret Studio fretboard viewer will show these shapes across the whole neck if you would rather see them than picture them.

How to actually drill it

Naming notes in order is the slow way, because songs never ask for notes in order. Pick one note — say F — and find every F on the neck, lowest to highest, then back down. Change note the next day. Two minutes, daily.

This is exactly the drill that Guitar Quest turns into gameplay: it hears the note you play through your microphone, so a wrong fret is caught immediately rather than practised in.

Naming a fret is one thing and finding it under pressure is another. Here is what that looks like:

Related reading

• Bass Guitar for Beginners: What to Learn First
• Bass Scales: The Four Shapes That Cover Most Songs
• How to Memorize the Guitar Fretboard