The G Major scale is a major scale which means it has the following definition:
R 2 3 4 5 6 7
The notes in the G Major scale are:
G A B C D E F# G
There are 7 notes in the scale with no flats and 1 sharp.
The scale definition for the G Major guitar scale is R 2 3 4 5 6 7 which means that the interval formula for the scale in semitones is:
2 2 1 2 2 2 1
You can also write this as note intervals:
Tone Tone Semitone Tone Tone Tone Semitone
Let's take a look at G Major on the guitar fretboard. Here is the scale across the entire fretboard:
Here is a quick recap of all the information about the G Major covered in this page:
The G Major Scale is a major scale.
The definition of the G Major scale is: R 2 3 4 5 6 7
The notes in the G Major guitar scale are: G A B C D E F# G
The interval formula for the G Major scale is: 2 2 1 2 2 2 1
The note intervals in the G Major scale are: Tone Tone Semitone Tone Tone Tone Semitone