Online Guitar Tuner
Tune your guitar with precision
Grant microphone access to start tuning
Tap a string to hear reference tone
Free online guitar tuner
Tune your guitar right in your browser with this free online guitar tuner. No app to install, no clip-on tuner to buy. Just open the page, enable your microphone, and you're ready to go.
The tuner uses real-time audio analysis to detect the pitch of your strings with cent-level precision. A visual gauge shows you exactly how far off you are, and a green glow confirms when you're locked in.
Why tune online?
Instant access
No downloads, no sign-ups. Open your browser, grant mic access, and start tuning in seconds.
Six popular tunings
Standard, Drop D, Open G, Open D, DADGAD, and Half Step Down all built in with reference tones for every string.
Works everywhere
Compatible with Chrome, Firefox, Safari, and Edge on desktop, tablet, and mobile devices.
Train your ear
Use the reference tone buttons to hear each string's target pitch, then tune by ear for better musicianship.
