How do I tune my guitar with an online tuner?

Allow mic access, pick the Guitar preset and pluck one string at a time. The tuner shows the nearest note and how many cents sharp or flat it is; tighten or loosen the peg until it turns green.

Can I tune a ukulele, a bass or Drop D?

Yes. There are presets for ukulele (GCEA) and 4-string bass (EADG). There is no Drop D preset, but Chromatic mode detects any note, so you can tune the low string down to D by note name.

How accurate is it, and what reference pitch does it use?

Reference pitch is fixed at A4 = 440 Hz and deviation is shown in whole cents. The display turns green within ±5 cents. A quiet room and plucking close to the mic give the steadiest reading.

Is my mic audio recorded?

No. Pitch is detected live in your browser, and nothing is recorded, stored or sent to a server.

Handy tools

Guitar Tuner

Online chromatic tuner that uses your mic: nearest note and cents sharp or flat in real time, with guitar, ukulele and bass presets.

A free chromatic tuner that listens through your mic. Pluck a string and it shows the nearest note and how many cents sharp or flat you are, while the closest string in the preset lights up. Presets for guitar, ukulele and 4-string bass.

Reference pitch is fixed at A4 = 440 Hz. The needle turns green within ±5 cents. For Drop D or other alternate tunings, switch to Chromatic and tune by note name.

🔒 Your mic is analyzed live on your device — nothing is recorded, stored or sent to a server.

Allow mic access, then pluck a string near your mic.

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Giggleus Guitar Tuner is a free online chromatic tuner that listens through your mic and shows the nearest note plus how many cents sharp or flat you are (±50), live. Pick a preset for standard guitar (EADGBE), ukulele (GCEA) or 4-string bass (EADG) and the closest string lights up; Chromatic mode reads any note, which also covers Drop D and other alternate tunings. Reference pitch is A4 = 440 Hz, and the display turns green within ±5 cents. Audio is analyzed in your browser and never recorded or uploaded.

Frequently Asked Questions

Q. How do I tune my guitar with an online tuner?
A. Allow mic access, pick the Guitar preset and pluck one string at a time. The tuner shows the nearest note and how many cents sharp or flat it is; tighten or loosen the peg until it turns green.
Q. Can I tune a ukulele, a bass or Drop D?
A. Yes. There are presets for ukulele (GCEA) and 4-string bass (EADG). There is no Drop D preset, but Chromatic mode detects any note, so you can tune the low string down to D by note name.
Q. How accurate is it, and what reference pitch does it use?
A. Reference pitch is fixed at A4 = 440 Hz and deviation is shown in whole cents. The display turns green within ±5 cents. A quiet room and plucking close to the mic give the steadiest reading.
Q. Is my mic audio recorded?
A. No. Pitch is detected live in your browser, and nothing is recorded, stored or sent to a server.