Updated November 4, 2026

Ukulele Tuner

Tune a soprano, concert, tenor, or baritone ukulele online with your phone or computer microphone.

Tunes with your device's microphone. Nothing is recorded or uploaded.

Settings

How to Tune Your Ukulele

Soprano, concert, and tenor ukuleles use standard G C E A. For a baritone ukulele, choose Baritone under Settings.
Tap Start Tuning and pluck one string at a time.
If it says Tune up, tighten the string. If it says Tune down, loosen it. Stop when it shows In tune.

In standard tuning the G string is tuned higher than the C string next to it. This is called re-entrant tuning. This page expects that high G (G4). If you use a low G string (G3), tune with the chromatic tuner instead.

String Notes and Frequencies

At the standard reference pitch, A4 = 440 Hz. String 1 is the highest-pitched string.

Standard

String	Note	Frequency
4	G4	392.00 Hz
3	C4	261.63 Hz
2	E4	329.63 Hz
1	A4	440.00 Hz

Baritone

String	Note	Frequency
4	D3	146.83 Hz
3	G3	196.00 Hz
2	B3	246.94 Hz
1	E4	329.63 Hz

Questions

What are the ukulele string notes?+

In standard tuning, from the string nearest your chin: G4, C4, E4, and A4. A baritone ukulele is tuned D3, G3, B3, and E4, like the top four strings of a guitar.

Why is the G string higher than the C string?+

Standard ukulele tuning is re-entrant: the fourth string is tuned up to G4 rather than down to G3. That keeps the notes close together and gives the ukulele its bright sound.

How do I tune a ukulele by ear?+

Tap a string button to hear its note and match the string to it. Or tune the C string first, then fret it: at the 4th fret it gives the E string's note, and at the 7th fret the G string's note. The E string at the 5th fret gives the A.

Can I tune a low G ukulele here?+

Use the chromatic tuner for low G tuning (G3 C4 E4 A4). This page's string buttons expect the high G4.

Is my audio recorded?+

No. The sound is analyzed in your browser, on your device. Nothing is saved or uploaded.