Guitar Tuner Pro



Unlock everything with GuitarTuna PRO in the app! Unlimited access to a chromatic tuner and 100+ tunings that include guitar, 7-string guitar balalaika, banjo, and 5-string banjo. Also includes Hx calibration, left-handed mode, and acoustic and electric headstock options. Download the free app. Pro Guitar Tuner is a chromatic tuner that works like an ordinary guitar tuner but right on your Android device. The app listen and analyze the sound in real time from the built-in mic, headset.



Welcome to use our tuner for free online. The app is fully chromatic and therefore the guitar tuner online does also support a variaty of stringed musical instruments. Click on any of the links below to read more about how to use the app for each specific instument. Also, it does work both for electric guitar and acoustic guitar.

If you are using a smartphone or tablet the guitar tuner app is best to use because the online tuner does not have smartphone support. If you are using a smartphone, download the our app Pro Guitar Tuner.

If you are using an acoustic guitar or any acoustic instrument the tuner will by default use the built-in microphone. However, if you want to tune an electric guitar or any plugged in instrument you have to adjust the input source.

The online guitar tuner is fully chromatic but if you need a reference of a specific tuning and tune by ear read: Setup Instrument and Tuning.

Guitar types and tunings

The online version of the ProGuitar Tuner includes a massive library of different guitar types and alternative tunings. Note that the tuner works for both electric and acoustic guitar. Read the last section of this page to see all tuning options available. The list of alternate tunings for guitar would be too long if we list all here. Therefore, the available guitar types only are listed below. Follow the link to see the tunings available for the specific guitar.

Setup Instrument and Tuning

Access tuning settings

Click on the area shown by the blue arrow and a window will open on top of the guitar tuner, see the image below.

Select instrument and tuning

Choose your preferred instrument. You scroll in the list by a click and drag motion.

After selecting an instrument, all the available tunings for that specific instrument will appear to the right. Choose the desired tuning by clicking on the area of a specific tuning. You should now hear a sequence played for each string and the fretboard will be updated with your desired tuning.

Tune by ear using audio samples

At any time you can click the strings on the fretboard to listen to a reference tone. One common way of is to tune the guitar to itself. If you are a beginner it can be a good practise to use a combination of a reference tone and a guitar tuner. One thing to notice is that the online guitar tuner does not show the actual octave. For that you need to download the smartphone app, which at the moment is of much higher quality than the online app.

Use the Guitar Tuner with the desktop's built-in microphone

If you any other browser than Google Chrome you need to have Flash installed and allow microphone access. See further instructions directly below the tuner by clicking the button 'Show Instructions'.

If you have any suggestions or think any other alternative tunings should be added, please send us a note through the guitar forum.

The tuner is fully chromatic but if you need a reference of a specific tuning when tuning by ear or if you want to tune any other instrument follow the steps in how to setup the guitar tuner for other instruments

Online Tuner For Your String Instruments

A mountain of online guitar tuners could be found on the internet, and all of them allow you to tune up your guitar by playing notes and listening carefully to the pitch. What we’ve created (and here's the best part,) is a hands down free online guitar tuner so you can easily tune up your guitar.

Guitar Tuner Pro

Our tuner works through a microphone on your device, and the instrument range you can tune-up with our online guitar tuner tool is endless: acoustic, bass, electric, ukulele, etc. As we didn’t set any limitations for the online guitar tuner, any instrument making a sound on a certain note will be perfectly recognized the same way as the sound of a guitar. However, we’ve created the tool with guitarists in mind and it has been created by guitarists.

Guitar Tuner Pro

Now the only thing you need to do is to open our webpage on your phone and bring your phone to the guitar (if it's an electric or a bass guitar, please put your phone close to the amp cabinet or your combo amplifier) to perfectly tune up your instrument.

Are you new to tuning?

If you are just at the beginning of your road, follow these three easy tips on guitar tuning for beginners.

Tuning Tip #1

Start with a Standard, EADGBE, tuning. Tune up the thickest string—the low E, then go your way to the high E—the thinnest string.

Tuning Tip #2

When tuning a guitar, use your thumb or a pick to play the string but try doing it not too soft or too hard, a firm pluck works the best.

Guitar Tuner Pro

Tuning Tip #3

Sounds too flat? Turn the peg away from you to get sharp and vice versa, turn the peg toward you to go flat if you feel the sound is too sharp.

Standard Guitar String Notes

Please start with the thickest string on your guitar, it is the first line in our tuning table below; and work your way to the thinnest string (the last line in the table.)

How to Tune a Guitar using our online guitar tuner?

To tune your guitar with our free guitar tuner online, please follow these five easy steps:

  1. Please open the https://guitar-tuner.app/ web page in your favorite browser from your phone, pc, or laptop (your device needs to have a microphone)

  2. Grant our website with access to the microphone of your device. Usually, your browser will ask you for permission.

    Please note: we don’t record or keep anything transmitting by a microphone, sound processing takes place in your browser and we don’t have access to your data in any way.

  3. Pick the first string and make sure it is configured following the tuning you use.

  4. If numbers on the screen differ up or down, make the necessary adjustments by turning the tuning mechanism of the specified string.

    Tip: we recommend to loosening the string in the first place and then pull it to the desired value. If you pulled a little harder than necessary, don’t try to loosen it back - just loosen it more than necessary and do the other try to pull it accurately.

  5. Please repeat step #4 for every string. After finishing the whole tuning process, check every string one more time and make sure that the guitar is tuned up following the tuning you used.

All Variations Of Guitar Tunings

Our online guitar tuner will help you tune your guitar no matter what tuning you use. For us, there is no difference whether it is open tuning, drop tuning or you are a fan of the classical E A D G B E system: you just need to open our page and allow us to hear your guitar.

Guitar tuner pro download

If you just found out that there are other tunings in addition to the standard one, you can try all variations of guitar tunings: standard, drop, open tunings. We have prepared several articles that may interest you: what tunings are, how they differ, where they are used, and so on.

Frequently Asked Questions

What is the best online guitar tuner?

There are a lot of online guitar tuners that could be found on the internet, the best are the most simple ones and those that could be used any time. You can use our free guitar tuner online or check for similar solutions as Pro Guitar Tuner, Fender Tuner and others.

Can I tune my guitar online?

Absolutely! Just use our online guitar tuner to fine tune your acoustic, bass, electric, or ukulele. More in our guide on how to tune your guitar.

Is there a free guitar tuner app?

Guitar Tuner Program

There are plenty of them either in AppStore or Google Play, just choose the one that fits you best.

Guitar Tuner Pro Tools

How do you tune a guitar with an electronic tuner?

Online Guitar Tuner No Download

To tune up your guitar with an electronic tuner, you need either plug your guitar into the tuner (if it is electric) or you can use the tuner's built-in microphone. For most guitars, you just need to turn the tuner on and play a note. The display will show you how close you are to the desired string and which direction to go.