Free Online Baritone Ukulele Tuner
Four strings, tuned like a guitar’s top four. Each read against its target.
A simplified preview of what the Tunable app does. Get the full app
Left to right: 4th string, the thickest, to 1st, the thinnest. Tune one string at a time.
Allow microphone access to begin
How to use this tuner
Click Start Tuning and allow microphone access. Play one open string at a time, and the tuner shows how sharp or flat you are from that string’s target in cents. Tap a string button to hear the note and lock the tuner to it.
The bar spans −50 to +50 cents. Zero is perfectly in tune. In string mode the value is the distance to the target string, not to the nearest chromatic note, so a string that is a long way off pins the needle at the edge until you get close.
The tuner reads against the nearest open string of Baritone DGBE tuning (D3, G3, B3, E4), so the cents value is the distance to that string, not to the nearest chromatic note. Tap a string to hear its reference pitch and lock the tuner to it; tap again to release.
Ukulele is already selected and no transposition is applied: the note names shown are the sounding notes. Changing the dropdown turns string mode off; tapping a string turns it back on.
Default is A440. Tap + / − to match a recording or another instrument that cannot be adjusted.
A baritone ukulele is tuned D3, G3, B3, E4, the same as the four highest strings of a guitar and a fourth lower than the GCEA of a soprano, concert, or tenor ukulele. It is a linear tuning: the strings rise in pitch from the fourth to the first, with no re-entrant high string, so a baritone plays and sounds more like a small nylon-string guitar than like a ukulele. Guitarists pick it up in minutes, because every chord shape is a guitar shape with the two bass strings removed; ukulele players find that all their shapes work but sound a fourth lower, so a C shape plays a G chord.
The reason this page exists is that almost everything labelled “ukulele tuner” assumes GCEA. A clip-on tuner in ukulele mode, a chromatic tuner with a ukulele preset, or the standard ukulele page will report a correctly tuned baritone as four wrong notes. This page reads each string against its DGBE target and lights the matching button as you play. Tap a button to hear the note or to lock the tuner to one string.
Baritone strings are longer and heavier than other ukulele strings, with a wound D and G on most sets, and they hold pitch better once settled but take longer to settle when new. Expect a fresh set to drift flat for a day or two: tune, play for a few minutes, retune, and repeat until the history line stops sliding. Wound strings are also more sensitive to finger pressure behind the fret, so if open strings read zero but fretted chords sound sharp, lighten the left hand before reaching for the pegs.
Baritones tune to A440 like everything else on this site; the A = control is there for playing along with a recording that is not at concert pitch. Some players string a baritone with a high-D set for a re-entrant sound, or tune it up to GCEA with a dedicated set to use it as an oversize tenor. For GCEA at any size use the standard ukulele tuner, and for the linear low-G variant of that tuning the low G page.
Frequently asked questions
How is a baritone ukulele tuned?
D3, G3, B3, E4, from the fourth string to the first. That is the same as the four highest strings of a guitar, and a perfect fourth below the GCEA tuning of soprano, concert, and tenor ukuleles.
Can I use ukulele chord shapes on a baritone?
Yes, but every chord sounds a fourth lower: a GCEA C shape gives a G chord on a baritone. Guitar chord shapes with the two bass strings left off give the chords their real names.
Why does my clip-on tuner say my baritone is out of tune?
Because its ukulele mode expects GCEA. Switch it to chromatic mode, or use this page, which reads each string against the baritone’s DGBE targets.
Want the complete experience?
The Tunable app adds 15+ tuning temperaments, metronome, tone generator, recording, ear training, and more, all on your phone.
