GuitarTuna's free online tuner uses your browser's mic to detect each string. Tune acoustic, electric, bass and ukulele across 111 tunings, no sign-up.

Tune your guitar online with a microphone! The guitar tuner will determine the frequency of the sound and help you to correctly adjust each string.

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Free online guitar tuner with real-time microphone pitch detection. Tune to standard EADGBE, Drop D, Open D, Drop C, half step down, and more alternate tunings. Works on any device no app needed.

Tune your ukulele, acoustic, electric or bass guitar with microphone or by ear. Free online tuner for any guitar or ukulele.

Use an online tuner with microphone pitch detection. Tune guitar, bass, acoustic, electric, standard tuning, drop tunings, and custom notes in your browser.

Free online guitar tuner from Fender. Tune your acoustic, electric or bass guitar, select from standard tuning, 12 alternate tunings or customize your own!

Our tuner uses the built in microphone on your laptop or mobile device to detect the frequency of each string on your guitar as you play each note.

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