Online Ukulele Tuner
Tune a soprano, concert or tenor ukulele to G C E A (high or low G), or a baritone to D G B E, with your microphone. Pluck one string and bring the needle to the middle.
🔒 Microphone audio is analysed live in your browser - it's never recorded or sent anywhere.
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How it works
Allow the mic
Press Start tuner - your browser asks once, and nothing is recorded.
Pluck one string
Start with the G string nearest your chin. The tuner shows the string you're closest to.
Centre the needle
Turn the peg until the needle is green in the middle, then move to the next string.
How to tune a ukulele online
Standard ukulele tuning is G C E A, often sung as My Dog Has Fleas. On most ukuleles the G is tuned high (re-entrant), so it sits between the E and the A.
G string (4th, nearest your chin)
Pluck it and tune to G4 - the high G of standard re-entrant tuning.
C string
The 3rd string is the lowest note, C4 (middle C).
E string
The 2nd string is E4.
A string
The string nearest the floor is A4 - 440 Hz.
Check again
Nylon strings stretch a lot; go round once more and again after a few minutes of playing.
Frequently asked questions
What are the ukulele string notes?
G4, C4, E4, A4 - from the string nearest your chin to the one nearest the floor. It's the same for soprano, concert and tenor ukuleles.
Why is my ukulele going out of tune so fast?
Nylon and fluorocarbon strings stretch a lot when they're new. Keep retuning - after a week or so they stay put.
How do I tune a low-G or baritone ukulele?
Pick Low G uke (G3 C4 E4 A4) or Baritone uke (D3 G3 B3 E4) above the tuner - it then names the string you're closest to.
What is the best online ukulele tuner?
One that hears your actual strings through the mic, shows which string you're on and how far off it is, and needs no app. This one does all three, works for standard, low-G and baritone ukes, and never records or uploads your audio.
Do I need an app?
No - this tuner runs in your browser on a phone, tablet or computer. Nothing to install.
What's A4 = 440?
The reference pitch the whole scale is built from. 440 Hz is the modern standard; some orchestras use 442, and some people prefer 432. Change it if your band or recording uses a different reference.
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