Online guitar tuner
Tune your guitar. See the truth.
Lumituner is a free browser strobe tuner for guitarists who want more than a needle’s rough estimate. Play a string, watch the pattern, and move it still.
Open the tuner →How it works
- 1. Allow your microphone. Audio is processed locally in your browser.
- 2. Play one clear string. Start with an open string and let the reading settle.
- 3. Stop the strobe. Left/right movement shows flat/sharp; stillness means centered pitch.
