Online Tuner — guitar, bass, violin & more
Tune any instrument with your mic. Real-time pitch & cents — all in your browser.
🔒 Runs entirely in your browser. Your input and output are never sent to a server or stored — fully private.
🔒 Audio is analyzed live in your browser — never recorded or uploaded.
About this tool
This online tuner uses your device's microphone to detect the pitch you play in real time, showing the closest note and how many cents you are sharp or flat. It works for guitar, bass, violin, wind instruments and voice — all in your browser, with no app to install and no audio ever uploaded.
Frequently asked questions
How do I tune my instrument?
Tap start and allow microphone access, then play a single note. The tuner shows the detected note and a needle that moves left when you are flat and right when you are sharp; adjust until the needle is centred and the note turns green.
Is my microphone audio recorded or uploaded?
No. The audio is analysed live in your browser to detect pitch and is never recorded, stored or sent to any server.