A free online tuner for guitar, ukulele and bass. Tap Start, play one string, and the needle shows whether it is in tune. No app, no sign-up.
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Tap Start tuner and allow the microphone. Nothing is recorded or sent anywhere.
Strings: tap one to hear its note and tune by ear
How to tune
- Choose your instrument above, then tap Start tuner and allow the microphone when your browser asks.
- Play one string at a time and let it ring. Keep other strings quiet.
- If the needle leans left (♭), the string is too low: tighten it a little. If it leans right (♯), loosen it.
- When the note turns green and says In tune, move to the next string.
No microphone, or it was blocked? Tap a string button to hear the right note and match it by ear. To allow the microphone later, tap the icon beside the address bar and choose Allow.
In tune and ready? Practise in time with the free metronome, or find your next song in chords.
Questions
What are the notes of standard guitar tuning?
From the thickest string to the thinnest: E, A, D, G, B, E (E2 A2 D3 G3 B3 E4).
What are the notes of a ukulele?
Standard ukulele tuning is G, C, E, A, from the string nearest your face to the one nearest the floor (G4 C4 E4 A4).
Is my microphone recording?
No. The tuner only measures the pitch while the page is open. Nothing is recorded, saved or sent anywhere, and it stops as soon as you tap Stop or leave the page.