The standard open-string notes most ukulele players mean by the question “what are the notes on a ukulele string” are G4, C4, E4, A4 (commonly written G–C–E–A), with exact frequencies approximately G4 = 392.00 Hz, C4 = 261.63 Hz, E4 = 329.63 Hz and A4 = 440.00 Hz.
Fast cheat-sheet: exact open-string notes most players mean
Standard soprano, concert, tenor: G4, C4, E4, A4 (G–C–E–A). Frequencies: G4 ~ 392 Hz, C4 ~ 261.63 Hz, E4 ~ 329.63 Hz, A4 = 440 Hz.
Re-entrant vs low-G: Most instruments ship with a high, re-entrant G (G4 above the open C4). Players can choose a linear low-G (G3 ≈ 196 Hz) instead; that changes the G octave but not the letter name.
Baritone exception: Baritone ukuleles use D3, G3, B3, E4 (D–G–B–E), which matches the top four strings of a standard-tuned guitar and sits lower than G–C–E–A.
Quick baritone and alternate-open tuning shorthand every beginner should know
Baritone mapping: Baritone open notes are D3 (≈146.83 Hz), G3 (≈196.00 Hz), B3 (≈246.94 Hz), E4 (≈329.63 Hz). That maps directly onto the guitar’s top four strings, so chord shapes and intervals feel familiar if you play guitar.
Low-G option: Low-G replaces the high re-entrant G4 with a thicker, wound G3 so the tuning reads G3–C4–E4–A4 and gives a deeper, more guitar-like low end for melodies and fuller chord voicings.
A‑step tuning (whole-step up): Some players tune the soprano/concert/tenor up a whole step to A–D–F#–B (a brighter option). Use heavier gauge strings and check headstock/bridge stress before trying higher tension.
Avoiding confusion: how ukulele string numbering and orientation work
String numbering: The 1st string is the bottom string (A), closest to the floor when you hold the uke in normal playing position; the 4th string is the top string (G). That means a casual instruction like “play the 3rd string” points to the C string.
Musician view vs diagram view: Tab and chord diagrams usually show the nut at the top and the 1st string on the right; a player holding the uke sees the 1st string on the left. Say note names aloud (e.g., “open A”) instead of only numbers to avoid mix-ups.
Left‑handed setups: Left‑handed instruments or rotated diagrams can invert left/right orientation. Confirm string letters (G, C, E, A) rather than relying on left/right words when giving instructions to students or bandmates.
Exact fretboard mapping: find any note on any ukulele string (step-by-step method)
Semitone logic: Each fret raises the pitch by one semitone. The 12th fret is exactly one octave above the open string. To find any note, count semitones from the open note and adjust octave numbers as you pass 12.
Method example: Start with the open note, add one semitone per fret. Write the note name and octave after each step. If you hit the 12th fret, the note name repeats one octave higher than open.
A4 string mapping (A4 open): 1st fret = A#4/Bb4, 2nd = B4, 3rd = C5, 4th = C#5/Db5, 5th = D5, 6th = D#5/Eb5, 7th = E5, 8th = F5, 9th = F#5/Gb5, 10th = G5, 11th = G#5/Ab5, 12th = A5.
E4 string mapping (E4 open): 1st = F4, 2nd = F#4/Gb4, 3rd = G4, 4th = G#4/Ab4, 5th = A4, 6th = A#4/Bb4, 7th = B4, 8th = C5, 9th = C#5/Db5, 10th = D5, 11th = D#5/Eb5, 12th = E5.
C4 string mapping (C4 open): 1st = C#4/Db4, 2nd = D4, 3rd = D#4/Eb4, 4th = E4, 5th = F4, 6th = F#4/Gb4, 7th = G4, 8th = G#4/Ab4, 9th = A4, 10th = A#4/Bb4, 11th = B4, 12th = C5.
G4 string mapping (re-entrant G4 open): 1st = G#4/Ab4, 2nd = A4, 3rd = A#4/Bb4, 4th = B4, 5th = C5, 6th = C#5/Db5, 7th = D5, 8th = D#5/Eb5, 9th = E5, 10th = F5, 11th = F#5/Gb5, 12th = G5.
Low‑G (G3) mapping: Same sequence of semitones as above but starting at G3; the 12th fret will be G4, matching the re-entrant G open pitch an octave higher.
Useful cross‑string references: On G–C–E–A tuning the 5th fret on G = open C, the 4th fret on C = open E, and the 5th fret on E = open A. Those fret landmarks let you quickly find pitches across strings.
Why re-entrant (high‑G) vs low‑G matters for the notes you play and how melodies sound
Re-entrant behavior: A high G4 sits above the open C4, so runs that cross the G string jump up instead of falling into a lower register; that makes strummed chords sparkle and compact melodies pop higher.
Low-G effect: Switching to low-G (G3) gives a continuous lowest pitch on the instrument and smooths melody lines that move up and down the neck; bass notes and melody doubling sound more conventional and guitar-like.
Practical example: A simple ascending scale across open strings in re-entrant tuning may leap in register at the G string; with low-G the same fingering produces a single, linear ascent. If you want sustained low notes, use low-G.
How to convert: Fit a wound low‑G string rated for the instrument, stretch it, use a tuner set to G3 and tune carefully while checking bridge and nut clearance; if the string buzzes or tension is excessive, choose a different gauge or consult a tech.
Practical tuning: how to get each string to the right note reliably
Chromatic tuner method: Use a clip-on or phone app chromatic tuner, set reference to A = 440 Hz, pluck an open string and tune until the tuner displays the target note name and the indicator is centered. For standard ukulele tune to G4/C4/E4/A4 or baritone D3/G3/B3/E4.
Relative tuning when no tuner is available: Tune the 4th string so its 5th-fret matches the open 3rd string (or use harmonics at the 5th and 7th frets) and then use the 4th/3rd and 3rd/2nd relationships: remember C→E is four semitones so you use the 4th fret there, while other string pairs use the 5th fret method.
Common beginner mistakes: Tuning without checking octave: ensure you set G as G4 or G3 intentionally; using the wrong gauge for low‑G; not stretching new strings (they’ll go flat after a few minutes); and overtightening pegs without winding neatly.
Tuning stability tips: Stretch new strings gently, wind cleanly and evenly around pegs, push the post into the peg slot as you turn, and consider locking or friction‑reduction peg grease for sticky gears.
Reading tabs and chord charts through the lens of string-note knowledge
Tabs → note names: Read the tab number as fret position on the named string and convert by adding semitones to the open-string pitch; knowing open-string notes lets you call out melody pitches quickly instead of guessing.
Root‑note locations: Identify a chord’s root note on the fretboard by locating the open-string note and moving frets up as needed; knowing where the same pitch appears across strings helps find simpler inversions and easier voicings.
Transposition tips: To shift a song up or down, move the root location along the neck rather than relearning shapes; use a capo to keep open-string resonances but change absolute pitch—remember a capo raises every open-string pitch by the number of frets clamped.
Memorization hacks and practice drills to internalize the notes on each ukulele string
One-string drill: Spend five minutes per day naming every fret on a single string up to the 12th fret; say the name aloud and check with a tuner or app.
Octave-matching exercise: Pick an open string and find the same note an octave higher on another string or at the 12th fret; repeat for different pairs until recognition is instant.
Interval spotting and mnemonics: Learn the 5th- and 7th-fret visual patterns and use a simple mnemonic for open strings like Good Cats Eat Apples to lock G–C–E–A into memory, then practice locating those letters on the neck.
Daily routine: Timed flash drills (30–60 seconds per string), cloze drills inside songs (identify the note you just played), and ear-identification of open-string pitches build fast recall in two weeks of consistent practice.
Troubleshooting pitch discrepancies and common tuning problems related to string notes
Why open strings wander: Temperature changes, humidity, fresh-string stretch, and loose nut or bridge fit all cause pitch drift; tune after warming up and check again after a few minutes of play.
Octave vs pitch-class errors: If the tuner shows the correct letter (e.g., G) but the octave indicator is off, you have an octave error (common with re-entrant vs low‑G choices); if the letter is wrong, you tuned to the wrong note entirely.
Fixes: Retune slowly and recheck octaves, stretch new strings and retune frequently until stable, lubricate sticky pegs or replace poor-quality tuners, and swap strings when gauges or age cause instability—seek a luthier for nut or bridge repairs.
Applying note knowledge for songwriting, transposing, and arranging on ukulele
Choosing keys: Knowing open-string notes helps you choose keys that exploit open strings for droning basses or ringing thirds—keys like C, G, and A often yield easy, resonant voicings on G–C–E–A.
Capo and voicing strategy: Use a capo to keep familiar shapes while raising the song’s pitch; knowing the resulting open-string pitches after capo placement lets you plan open-string drones and harmonics intentionally.
Arrangement tips: Use open-string drones and double-stops that match open notes for fuller-sounding arrangements; on baritone, use open D and G to ground lower registers in singer‑centric arrangements.
Handy reference resources and printable quick charts every player should keep
Printable items to keep: An open-string cheat sheet with octave and frequency, a fretboard map up to the 12th fret for each string, and a small card showing interval landmarks (4th/5th fret relationships and the 12th-fret octave).
Recommended tuners and apps: Use reliable tuners such as clip-on chromatic tuners and phone apps like Fender Tune or GuitarTuna; look for chromatic mode and A = 440 Hz reference control.
Checklist for choosing tuning and string gauge: Match string gauge to desired tuning (choose wound low‑G strings for low‑G, heavier sets for whole‑step-up tunings), confirm nut and bridge clearance, and test tension to avoid damage.
