How to Tune a Ukulele: Standard, Low G, and Baritone

Know which ukulele tuning you have

Hold the instrument in playing position and count the strings from the one nearest your face toward the floor. On a standard ukulele those notes are G, C, E, and A. Standard high G tuning is re-entrant: the first G is higher than the C beside it, so the strings do not progress from low to high in a straight line.

Low G tuning uses the same note names but lowers the G by one octave. It gives melodies and fingerstyle arrangements a wider range. Baritone tuning, DGBE, matches the highest four strings of a guitar and requires a dedicated baritone reference rather than a standard GCEA tuner mode.

• Standard high G: G4, C4, E4, A4
• Low G: G3, C4, E4, A4
• Baritone: D3, G3, B3, E4

Tune the strings in a reliable order

Start with the string that is already closest to its target and work across the instrument. Pluck with a normal, relaxed attack and let the pitch settle for a moment. A tuner may briefly read sharp at the attack because a stretched string begins with extra tension. Tune to the sustained part of the note, not that first spike.

Approach the target pitch from below whenever practical. If a string is sharp, loosen it slightly below the note and then tighten upward. This helps the string seat consistently around the post and reduces the chance that slack will release after you begin playing.

1. 1Choose GCEA, low G, or baritone mode on the tuner.
2. 2Pluck one open string and mute the other three strings.
3. 3Turn the matching peg in small movements while watching the note name.
4. 4Stop when the correct note is centered and stable, then check it again.
5. 5Tune all four strings a second time because changing one string slightly affects the others.

Understand sharp, flat, and cents

If the tuner says the note is flat, the string vibrates too slowly and needs more tension. Tighten it carefully. If it says sharp, the string vibrates too quickly and needs less tension. Loosen it, then approach the target again from below.

Many tuners show cents. One semitone contains 100 cents, so a reading of minus 12 cents is a little flat and plus 12 cents is a little sharp. For ordinary practice, a stable reading within about five cents is usually more useful than endlessly chasing a display that moves with every tiny change in finger pressure or room noise.

Why a ukulele goes out of tune

New nylon or fluorocarbon strings stretch for several days. Tune them frequently, play for a few minutes, and tune again. Do not pull them aggressively away from the fretboard; steady playing and repeated tuning are safer than trying to force all of the stretch out at once.

Temperature also matters. Strings tend to change pitch when the instrument moves between a warm room, a cold car, direct sunlight, or an air-conditioned space. Give the ukulele a few minutes to adjust before making final tuning decisions. Peg slippage, loose hardware, and strings wound poorly around the post can cause larger recurring changes.

• Retune new strings often during their first week.
• Check tuning after moving between different temperatures.
• Leave neat wraps around the post instead of overlapping knots.
• If one string never holds pitch, inspect the peg and string installation.

Check tuning with chords

After the tuner centers every string, play a C major chord and then an F or G chord. This musical check can reveal an accidentally selected octave or a string that moved while you tuned the others. Press only hard enough to make each note clear because excessive fretting pressure can pull notes sharp.

Ukuleles also have natural intonation limits. An open string can be perfectly tuned while a worn string or poorly adjusted instrument sounds less accurate high on the fretboard. If open strings are correct but every chord above the fifth fret sounds consistently wrong, the problem may be setup or string condition rather than your tuner.