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Home > Online Guitar Tuner > Open Guitar Tuning

Open Guitar Tuning


Open guitar tuning is a form of alternate tuning (from the standard E A D G B e) based around an open chord. When you're in open E tuning, for example, if you strum across all 6 strings open (without fretting), you will hear the chord E major.

There are also minor open tunings that work in a similar way.

Effectively, you can barre your finger across all 6 strings at any fret and you'll get a full-voiced major chord. The advantage of open tuning is you can use the fact it's already tuned to a major chord as a base and your other fingers are freed up to build on that chord with interesting tones.

Open guitar tuning can get you some rich sounds and different "flavours" than we're used to with standard tuning. It's by no means a replacement for standard tuning, but rather something to experiment with.

Use the free tuners below or use the all-in-one tuner here...

Open A Tuner

Open C Tuner

Open D Tuner

Open E Tuner

Open G Tuner


Open A guitar tuner - E A E A C# E Click each string to hear and tune up

Playing all 6 strings unfretted in open A tuning sounds the A major chord.


For open A minor tuning...

There is just one note that determines whether a chord/tuning is major or minor (the 3rd tone of the major scale). In this case, we flatten the C# string to a minor 3rd - C

Click the string below to tune...


Open C guitar tuner - C G C G C E Click each string to hear and tune up

Playing all 6 strings unfretted in open C tuning sounds the C major chord.


For open C minor tuning...

There is just one note that determines whether a chord/tuning is major or minor (the 3rd tone of the major scale). In this case, we flatten the E string to a minor 3rd - Eb (E flat)

Click the string below to tune...


Open D guitar tuner - D A D F# A D Click each string to hear and tune up

Playing all 6 strings unfretted in open D tuning sounds the D major chord.


For open D minor tuning...

There is just one note that determines whether a chord/tuning is major or minor (the 3rd tone of the major scale). In this case, we flatten the F# string to a minor 3rd - F

Click the string below to tune...


Open E guitar tuner - E B E Ab B E Click each string to hear and tune up

Playing all 6 strings unfretted in open E tuning sounds the E major chord.


For open E minor tuning...

There is just one note that determines whether a chord/tuning is major or minor (the 3rd tone of the major scale). In this case, we flatten the Ab (A flat) string to a minor 3rd - G

Click the string below to tune...


Open G guitar tuner - D G D G B D Click each string to hear and tune up

Playing all 6 strings unfretted in open G tuning sounds the G major chord.


For open G minor tuning...

There is just one note that determines whether a chord/tuning is major or minor (the 3rd tone of the major scale). In this case, we flatten the B string to a minor 3rd - Bb

Click the string below to tune...



Experiment with open guitar tuning along with other alternate tunings and you'll find different chord voicings in each one, unique to that tuning.

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