Tune by ear, or click Start Tuner to use your mic. All 74 tunings are free, plus chromatic mode and a custom tuning builder: every drop and open tuning, 7/8/12-string, bass, ukulele, banjo, mandolin, violin and more. Pluck one string at a time and match it to the target.
10+ instruments, all free.
Strings:
Build any tuning you want. It saves in your browser for next time.
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Pick a tuning, then start the tuner
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Your audio never leaves your device — pitch detection runs entirely in your browser.
No mic? You can still tune by ear — click any string circle to hear its reference pitch. 🔊
How to use this tuner
Choose your tuning above (Standard E is the default).
Click Start Tuner and allow microphone access when your browser asks.
Pluck a single string. The tuner finds the nearest string and shows you how far off you are.
Turn the tuning peg until the needle centers and turns green, reading In tune.
Tunings included
Standard — E A D G B E, the tuning for most songs.
Drop D — D A D G B E, low string dropped a whole step for heavier riffs.
Half-Step Down — E♭ A♭ D♭ G♭ B♭ E♭, everything down one fret.
Full-Step Down — D G C F A D, down two frets.
DADGAD — a popular open/modal tuning for folk and Celtic.
Open G — D G D G B D, used by slide players and the Stones.
Open D — D A D F♯ A D, a bright open-chord tuning.
Want to know the notes inside a chord once you're tuned up? Try the
Chord Analyzer or browse the
Chord Library.