FOUNDATIONS · 5 MIN SUGGESTED
Guitar Fretboard Notes & Octaves
A note name needs an octave when a specific register matters.
Fretboard landmarks and octave relationships · By Vincent Iannone · Updated
How do you find notes on the guitar fretboard?
You find notes on the guitar fretboard from a few fixed landmarks rather than by memorising every position. In standard tuning the open strings sound E2, A2, D3, G3, B3 and E4 from low to high. Each fret raises a string by one semitone, so twelve frets make an octave: fret 12 has the same note name as the open string, one octave higher. The fifth fret of each string matches the next open string, except on the G string, where the fourth fret matches open B. Octaves also form repeatable shapes, such as two strings higher and two frets higher on the lower strings. Because the same letter appears in several registers, a precise note name includes its octave number: C3 at string 5, fret 3 and C4 at string 2, fret 1 share a letter but not a pitch.
The idea
Start with a few reliable landmarks instead of memorizing every dot. Standard tuning is E2 A2 D3 G3 B3 E4 from low to high. Frets 0 and 12 share a note letter; fret 12 sounds one octave higher.
Put it under your fingers
- Play open string 6 (E2), then fret 12 (E3). Hear the octave.
- Find C3 at string 5, fret 3, and C4 at string 2, fret 1.
- Play C3, E3, G3 slowly. Say each note before you pick it.
Two landmarks, two registers
Hear open low E2 rise to E3 at fret 12, then compare C3 on string 5 with C4 on string 2.
Sounding notes: E2 → E3 → C3 → C4.
| # | Sounding note | Move from the previous note |
|---|---|---|
| 1 | E2 | Starting note |
| 2 | E3 | Up 12 semitones |
| 3 | C3 | Down 4 semitones |
| 4 | C4 | Up 12 semitones |
Make it yours
Without looking, find two Cs in different octaves. Check both against the lab.
Keep the ideas connected.
- Major & Minor Thirds on GuitarMajor and minor describe an interval or chord quality, not its volume or speed.
- Interval Ear Training for GuitarHear a named reference note, then find a hidden second pitch on the fretboard. Practice relative intervals with guitar staff notation, clickable frets and replay.
- Walking Bass Lines on GuitarLearn to walk a bass line on guitar: roots on beat one, chord tones, scale steps and chromatic approach notes through a ii–V–I and a blues.