The standard open-string tuning for most soprano, concert and many tenor ukuleles is G–C–E–A; that sequence, read from the top (4th string) to the bottom (1st string), sets the instrument’s basic pitch relationships and reference frequencies.
Exact notes for standard ukulele tuning (GCEA): string names, octave and frequency reference
Open-string order from top (4th) to bottom (1st): 4th (G) — 3rd (C) — 2nd (E) — 1st (A).
Standard re-entrant (high‑G) pitch: G4 — C4 — E4 — A4. Common reference frequencies: G4 ≈ 392.00 Hz, C4 ≈ 261.63 Hz, E4 ≈ 329.63 Hz, A4 = 440.00 Hz.
GCEA works as the baseline because the intervals—fourth, third, fourth—create compact chord voicings that sound full on short-scale ukuleles and make common chord shapes simple to finger.
Re-entrant (high‑G) vs linear (low‑G): how the G octave changes tone and range
High‑G (re‑entrant) uses G4 and gives the classic bright, punchy ukulele tone and tight chord clusters; that high G sits above the C and E, producing quick, percussive voicings.
Low‑G (linear) uses G3 (≈196.00 Hz) and extends the low end, which makes chord tones spread out and enables fuller bass lines and more guitar-like soloing.
Choose low‑G if you play fingerstyle, want extended bass, or arrange pieces that need lower pitches; choose high‑G if you want traditional ukulele sparkle and simpler compact chords.
Baritone ukulele tuning (DGBE): the different notes and why it matters
Baritone open strings are D3 — G3 — B3 — E4, matching the top four strings of a standard-tuned guitar.
Reference frequencies for baritone: D3 ≈ 146.83 Hz, G3 ≈ 196.00 Hz, B3 ≈ 246.94 Hz, E4 ≈ 329.63 Hz.
DGBE changes chord shapes and voicings: shapes you know on GCEA will sound different and many players use a capo or relearn shapes to match songs written for GCEA instruments.
Quick cheat-sheet: instant reference for GCEA, Low‑G, and Baritone notes and Hz values
One-line quick refs: GCEA (re‑entrant): G4‑C4‑E4‑A4; Low‑G: G3‑C4‑E4‑A4; Baritone (DGBE): D3‑G3‑B3‑E4.
How to use the cheat-sheet: set your tuner or reference instrument to the listed note and adjust each open string until the displayed pitch (or aural match) lines up with the target.
Step-by-step tuning with a clip‑on or digital tuner (fastest reliable method)
Attach a clip‑on tuner to the headstock or use a reliable chromatic tuner app; strike a single open string and watch the tuner display the note and cents deviation.
Recommended order and habits: tune the A (1st) string to a reference (A4=440 Hz) first, then tune E (2nd) using the tuner, tune C (3rd), and finish with G (4th) to minimize cumulative error.
Always make small adjustments: tighten a peg to raise pitch and loosen to lower pitch; avoid big turns and re‑check strings after each pass because string tension shifts others.
Calibrate your tuner to A = 440 Hz before you start and read its sharp/flat indicators: if the tuner shows a positive cents number the string is sharp; negative means flat.
Tuning by ear: relative tuning methods, harmonics and chord checks
Start with a trusted reference (piano, tuning fork, or a tuned A) and set the A string first; then use fretted intervals to match the others precisely.
Solid relative tuning routine: tune A to reference; then tune E by fretting the E string at the 5th fret so it matches open A; tune C by fretting C at the 4th fret to match open E; tune G by fretting G at the 5th fret to match open C.
Harmonics and chord checks: listen for beats (wavering) between two notes — the slower the beats, the closer the pitch. Use natural harmonics or strum a G‑C‑E‑A chord and listen for steady ring without pulsing.
How to use alternative reference sources: tuner apps, clip‑on tuners, tuning forks, pitch pipes and pianos
Clip‑on tuners read vibrations and perform well in noisy environments; phone apps are convenient but rely on the microphone and can be less accurate on stage.
Use a tuning fork (A4=440 Hz) by striking it and holding it near the uke to tune the A string, then tune the rest relative to that A.
For band or ensemble work, match to a piano or guitar reference and re‑check with a clip‑on to avoid stage noise errors.
In loud settings, prefer contact/clip tuners and check tuning between songs; always have a quick two‑string check (A and E) before each performance.
Common tuning issues and troubleshooting (slipping pegs, unstable pitch, intonation problems)
Peg slippage: if a peg turns under string tension, wind the string neatly, leave a few wraps around the post, tighten tuner bushings if present, or replace worn tuners.
New strings stretch: stretch each new string by gently pulling along its length, then retune repeatedly for the first 24–48 hours until tuning stabilizes.
Temperature and humidity cause pitch drift: keep the instrument in a case, use a humidifier in dry climates, and re‑tune after temperature changes.
Intonation test: compare the open string to the note at the 12th fret (fretted octave) or the 12th‑fret harmonic; if they differ significantly, the saddle or nut may need adjustment.
Alternate tunings players use and their note sets (when to change from GCEA)
D‑tuning (historical “D tuning”) raises GCEA by a whole step to A — D — F# — B, producing a brighter pitch and different chord voicings useful for older songs and certain ensemble settings.
Low‑D or low‑G variants add lower bass extension; switch to heavier gauge strings designed for lower tension if you plan to tune down to protect string life and neck tension.
Open tunings and slack‑key variations are used for slide, folk, or experimental textures; change only when the arrangement or tonal goal benefits from altered chord shapes and drones.
Maintenance and habits to keep your ukulele in tune longer
String care: replace strings when tone dulls or tuning stability drops; fluorocarbon strings hold pitch better and sound brighter than traditional nylon for many players.
Stretch new strings properly after fitting, trim excess winding, and wind strings evenly around the post to prevent slippage.
Hardware and setup: check tuner tightness, inspect nut slot depth, and make sure bridge and saddle are seated correctly; a professional setup solves persistent tuning or action problems.
Storage: keep the instrument in a case or gig bag, control humidity around 40–60% if possible, and avoid rapid temperature swings.
When to call a tech: signs your ukulele needs professional setup or repair
Call a luthier or tech if the instrument won’t hold pitch despite fresh strings, or if open vs fretted notes show large intonation errors across multiple strings.
Also get help for constant peg slippage, warped neck or serious buzzing that doesn’t improve after basic checks; common shop fixes include nut slot work, saddle re‑positioning, fret dressing, and tuner replacement.
Expect simple setups to take under an hour and cost modestly; more extensive repairs (neck work, refretting) take longer and cost more—get an estimate before work begins.
Quick ear‑training drills and a 5‑minute daily routine to speed up tuning by ear
Five‑minute routine: 1) strike an A reference and tune A; 2) fret E at the 5th fret to match open A; 3) fret C at the 4th fret to match open E; 4) fret G at the 5th fret to match open C; finish by strumming a G‑C‑E‑A chord and listening for steady tone.
Interval drills: practice identifying perfect fourths (5 semitones), major thirds (4 semitones) and octaves on your uke until you can name them by ear; this accelerates relative tuning decisions.
Progress check: record a short clip before and after a week of daily practice to hear improvement and rely less on electronic tuners for small adjustments.
