Updated September 28, 2026

Ukulele Tuner

Tune a soprano, concert, tenor, or baritone ukulele with your device's 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.