Experience pitch-perfect tuning right in your browser. No app installation required.

Whether you are a beginner picking up the guitar for the first time or a seasoned musician needing a quick check, our online tuner delivers studio-grade precision. Designed with a clean, dark-mode interface, it cuts out the visual clutter so you can focus entirely on your sound. Just allow microphone access, pluck a string, and get perfectly in tune within seconds.

How to use

  1. Choose your instrument from the top dropdown.
  2. Select Auto or Manual detection mode.
  3. Pick a tuning preset or customize each string's note with the arrows.
  4. Press Start and play a string to begin tuning.

Tune My Strings

Free Online Tuner
-50 0 +50
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Features

  • High-Precision Detection: Pinpoint accuracy down to the cent (-50 to +50) for flawless intonation.
  • Distraction-Free UI: A sleek, minimalist aesthetic that is easy to read in any environment, from a dimly lit bedroom to a bright outdoor gig.
  • Auto & Manual Modes: Let the tuner automatically detect your note, or click on a string to play a reference tone and train your ear.
  • Multiple Instruments: Easily switch between setups for Acoustic/Electric Guitar, Bass, Ukulele, and more.
  • Alternate Tunings: Quick access to standard and popular alternate tunings (Drop D, Half-step down, Open G).
  • Privacy First: All audio processing happens locally in your browser. No sound is ever recorded or uploaded.

How to use our free online tuner

Getting your instrument in tune has never been easier. Simply click "Start" and grant your browser permission to use the microphone. Pluck a single string loudly and clearly. The digital dial will instantly react, showing you exactly what note you are playing. If the indicator pulls to the left (negative cents), your string is flat—tighten it gently. If it pulls to the right (positive cents), it is sharp—loosen it. When the dial hits dead center and lights up green, you are perfectly in tune.