The standard tuning for common sizes of ukulele is GCEA, with the "A" being the highest pitched note, on the string which is closest to the ground when you hold your uke in the normal way. This is sometimes shown as "gCEA" and the notes can be shown as "G4", "C4", "E4" and "A4".
The "E" string is tuned 3 notes lower than the "A" string (an interval known as a "perfect fourth") and the "C" string is 2 notes lower than the "E" string (a major third). The "C" string is tuned to the same note as "Middle C" on a piano.
The "G" string may have one of two tunings. The normal tuning for the "G" string is 4 notes above the "C" string (a perfect fifth). This is known as a "High G" (G4). However, some people prefer to have a "Low G" string (G3) on their ukuleles and this is tuned an octave lower than a standard (G4) G string, 4 notes BELOW the "C" string. Please note that "Low G" tuning requires changing the G string on your ukulele.
To hear these notes, click on the buttons on the right. You can tune your ukulele to these notes.
To change to a "Low G" set up, click on the "Show Low G String" button
Other TuningsSome people like to tune their ukuleles to different notes. "ADF#B" was popular in the early 1900s but be aware that this needs you to learn new fingerings for your chords if you want to play with other people.
You can also tune soprano and concert size ukuleles in fifths if you prefer. You will need to change the strings for a special set of strings and the tunings then will be "GDAE" on a soprano uke and "CGDA" on a concert ukulele. These are the same as the tunings of a mandolin and a mandola repectively.
Baritone and bass ukuleles are tuned in fourths and the tuning is "DGBE" and "EADG" respectively.
Reference FrequencyStandard tuning for ukuleles is based on the note "A4" having a frequency of 440Hz. Some electronic tuners will allow you to change this a little, producing a slightly higher or lower tuning. This is usually not a good idea so if you are using an electronic tuner, make sure it's set to "440" (sometimes just shown as "40").