Do you remember how to tune each string. Check below!

Tune your guitar online on If you can not see the tuner you and you are using an iOS device (i.e. iPhone or iPad):
you must download our guitar tuner app

If you are using a computer you need to:

download the latest Adobe Flash Player.. You might not be able to use the guitar tuner in all browsers. If you experience any problems please contact us.
Hope this text will help you to tune your guitar online, otherwise do not hesitate to contact us and we will try to solve your problems!

Guitar tuner iPhone app

Get it on Google Play


Android app is here!

Pro Guitar Tuner on Android Pro Guitar Tuner on Google Play

  • Great tuner. Just intonated my bass with it and it worked great.–Noah

  • Fantastic tuner! I can forget my iPhone. . .–John Higgins

  • Drop A# works properly for me! Very good tuner!–Isak

  • Thank you! Works awesome!–deependerlawrence

  • Shukran wajid. Good job.–Cons

  • Imprecionante! Gracias.–samurai3ro

  • Very perfect tuner. Like.–Rudra

  • This tuner is perfect and makes my life much easier, thanks :) It’s much better than my cheap tuning pipes and guitar tuner.–Michael

  • It’s GREAT! Thanks :) Now I can play my guitar well .–ME

  • Awesome ! It save’s 12 $ of mine…–Amit Kushwaha

  • f***** awesome indeed dude cheers rockin out in drop d dude \../–Chris

  • Thank you! Works awesome!–Adam

  • gooddddddddddddd!!!!!!!! f***** awsome!–Guitar Tuner user

  • My guitar goes out of tune very fast so I am using this app everyday! Awesome app don’t know what I would do without it :D–TheAlienApocalypse

  • Really good app work well–Bryan Brown

  • I have save 24$ for this. 😀 thank you!–Angeli

  • Ya!!! Its Nice, I love it.–Motasim Foad

  • I washed my tuner in the washing machine now its hard to read. This one works great “awesome”–Rodney Ginter

  • Best tuner, thx.–Luko

  • Thank you very much!–Ravindu

  • This is awesome. A lot of songs I’m learning require me to tune a string to F and I could not find a tuner that showed F until I googled it and got this. Best part is it’s free. Thank you UGT!!!–Stover

  • Thanx for ur guitar tuner, it help me a lot to tune my guitar correctly with the correct pitch of strings sound and I never seen type of online tuner for guitar. Its very easy to correct ur guitar string …………thanx again..and ha i’ll tell ma friends also about this site……–Prabhat Sagar

  • Really great idea. Thanks a bunch.–Terry Francis

  • This is so good!!!!! thanx!!!!!–Therese

  • You Are AWESOME!!!!!!!–Nick

  • Omg !! 😀 Thank u Sooooooooo Much

  • No words feel in my heart …..thank you–Mohamed

  • Good looking tuner! I will write an article about it!–Music of Songs

  • O my god, I cant belive it really works. Its very good.–Paul21

  • Hey, this is cool. It’s about time somebody put together a decent online tuner. Thanks guys – this is awesome.–Charango

  • Hey!! finally an excellent online tuner! 😀 , have tryed it and have to say Perfect accuracy (IMO at least), after tuning on here my guitar sounds perfectly tuned!, better that other commercial tuners :)–Adolf

Old comments

  • How to use the online guitar tuner

    Guitar tuner instructions:

    • Requirement – You need to install Adobe Flash Player 10.1 or later.
    • Select input source – To be able to tune your instrument you need to allow access to your computer’s microphone. Press the “Allow-button” ( Allow-button from Adobe Flash Player ) in the pop-up window to use the built-in microphone. No audio data is stored or sent to server, for more information see our privacy policy. If the computer does not have a built-in microphone you can use an external microphone, click the settings-button ( Microphone settings ) on the tuner and change the input source to your external microphone. You can also change the input source to line-in, which enables you to plug in an electric guitar to the sound card. Don’t hesitate to contact us if you experience any problems.
    • Pluck the string – The tuner will display the current note and indicate the current pitch.
    • Start to tune – The string is in tune when the needle has a vertical position. If the needle is to the left of the center you need to tighten the string. If the needle is to the right of the center you need to reduce the tension of the string. Remember only to make minor changes to the strings tension while tuning.
    • Start playing – Start playing and tell your friends about this free guitar tuner site.
    • Video instructions:

  • Technical data

    Guitar tuner data:

    • Chromatic: This means you are able to tune all tones of the chromatic scale.
    • Interactive: The tuner will analyze the sound from your guitar and give you instructions in real-time online.
    • Automatic: The tuner detects the pitch automatically and you do not need to choose a specific note.
    • Accuracy: +/- 1 cent of a semitone, i.e. accurate as a conventional hardware tuner.

    The chromatic scale:

    C      C♯/D♭      D      D♯/E♭      E      F      F♯/G♭      G      G♯/A♭      A      A♯/B♭   B

    The guitar tuner never displays flat signs. But do not worry, the reason is very simple. As you can see in the chromatic scale above all twelve semitones can be found. For example, both C♯ and D♭ have exactly the same pitch but they have different names depending on the reference scale. Note that all notes in the chromatic scale with a sharp sign (♯) also have a corresponding note with a flat sign (♭).