Free online ukulele tuner — standard GCEA
Standard ukulele tuning from the 4th string to the 1st is G4–C4–E4–A4. Note that the G string is re-entrant: it is tuned higher than the C string, which gives the ukulele its characteristic bright, jangly tone. This tuner handles that correctly — G4 (392 Hz) is highlighted on the 4th string.
Pluck one string at a time, allow it to ring, and watch the cents indicator settle. When the display turns green and reads within ±5 cents, that string is in tune. Practice timing once you're in tune with our free online metronome.
Why is the G string higher than C on ukulele?
This is called re-entrant tuning. Unlike guitar which is tuned low to high, the ukulele G is a fourth above A rather than a fourth below. It gives the ukulele a characteristic chiming quality when strummed, and means the strings don't go strictly from low to high pitch.
Can I tune a baritone ukulele here?
Yes — baritone ukulele uses DGBE tuning. Select the note on screen by pitch: D3 (146.8 Hz), G3 (196 Hz), B3 (246.9 Hz), E4 (329.6 Hz). The chromatic display will show the correct note regardless of string label.