Ukulele tuner
Pluck a string — the tuner recognises it and shows whether to tighten or loosen it. It works with your microphone right in the browser; the sound is never uploaded.
Microphone needed
Sound is analysed right in your browser and never uploaded. The browser will ask for permission once.
Ukulele tuning
Standard ukulele tuning is G C E A. It is a re-entrant tuning: the 4th string G is higher than the 3rd string C. Soprano, concert and tenor ukuleles use it; the baritone is tuned D G B E, like the four thin strings of a guitar.
- 4th string — G4, 392 Hz
- 3rd string — C4, 261.63 Hz
- 2nd string — E4, 329.63 Hz
- 1st string — A4, 440 Hz
Other tunings in the list: low G, baritone (D G B E), D tuning (A D F♯ B).
How to tune a ukulele online
- Press "Turn on microphone" and allow access — the sound is processed right in your browser and never uploaded.
- Pluck one string. The tuner recognises it and the needle shows how far it is below or above the note.
- Needle left of centre — the string is flat, tighten the peg. Right — it is sharp, loosen it. The green zone (±5 cents) and a check mark mean the string is in tune.
- Prefer tuning by ear? Tap a string in the list to hear its note.
- New nylon strings keep stretching for days — re-tune before every session.
- Want a fuller bass string? Choose the low G tuning (G3).
- Tap a string in the list to hear its note and tune by ear.
Frequently asked questions
How is a ukulele tuned?
G C E A: G 392 Hz, C 261.63 Hz, E 329.63 Hz, A 440 Hz. The G string is higher than C — a re-entrant tuning.
Does it work for a baritone ukulele?
Yes, choose "Baritone: D G B E" in the tuning list.
Why does my ukulele go out of tune so quickly?
Nylon strings take a long time to settle. After a week or two of playing they hold the tuning much better.