Online Guitar Tuner - Free Guitar Tuning App
The best free online guitar tuner. Tune your acoustic, electric, or bass guitar instantly using your microphone. Accurate chromatic tuning for Standard, Drop D, Open G, and 30+ alternate tunings.
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The Best Free Online Guitar Tuner App
100% Free Guitar Tuner Online
Use our guitar tuner online free - no downloads, no apps, no sign-ups. This web-based guitar tuning app works instantly in your browser. Perfect for quick tuning anywhere, anytime.
Chromatic Guitar Tuner for All Guitars
Our chromatic tuner works with acoustic guitars, electric guitars, bass guitars, and ukuleles. Accurate pitch detection via microphone makes this the perfect guitar tuning online tool for any instrument.
30+ Tuning Options
Beyond standard EADGBE tuning, explore Drop D, Drop C, Open G, DADGAD, and many more alternate tunings. Perfect for different music genres from rock and metal to folk and blues.
Mobile & Desktop Ready
Our responsive design works seamlessly on all devices. Tune your guitar using your smartphone, tablet, or computer. The interface automatically adapts for the best experience on any screen size.
Join thousands of guitarists using the best free guitar tuner online. Whether you need standard tuning or alternate tunings, our guitar tuning app delivers professional accuracy without downloads or fees.
Quick Access to Specific Tunings
Jump directly to a preset tuner for your specific tuning. Each page has a tuner locked to that tuning for quick and easy access.
Popular Guitar Tunings & Resources
Need Something Different?
Create your own custom tuning with any number of strings and notes. Perfect for experimental tunings, extended range instruments, or unique setups.
Try Custom TunerHow to Tune Your Guitar
Follow these simple steps to get your guitar perfectly tuned using our online tuner.
1Getting Started
- Click the settings button to choose your instrument and tuning
- Press the microphone button to start listening
- Allow microphone access when prompted
2Tuning Process
- Play one string at a time clearly
- Watch the needle - center and green means in tune
- Adjust your tuning pegs as needed
3Auto-Detection
- Auto-detect automatically selects the string you're playing
- Turn it off to manually select strings
- Great for beginners and experienced players
💡Pro Tips
- Play strings clearly and let them ring out
- Needle left = tighten, needle right = loosen
- Tune in a quiet environment for best results
Install as Mobile App
Add Guitar Tuner to your phone's home screen for quick access. Works offline and feels like a native app!
📱iPhone (Safari)
- 1Open in SafariMake sure you're using Safari browser
- 2Tap the Share buttonLocated at the bottom of the screen
- 3Select "Add to Home Screen"Scroll down if you don't see it immediately
- 4Tap "Add"The app will appear on your home screen
🤖Android (Chrome)
- 1Open in ChromeMake sure you're using Chrome browser
- 2Tap the menu (⋮)Three dots in the top-right corner
- 3Select "Add to Home screen"Or look for "Install app" option
- 4Tap "Add" or "Install"The app will appear on your home screen