semicord

G G major chord

Notes
G B D
Formula
1 3 5
Semitones
0 4 7 above the root
Other symbols
GM, Gmaj

G to B is a major third (4 semitones), B to D is a minor third (3 semitones). The major triad: a major third with a minor third on top, the tonic chord of the key of G major.

G on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4GBC5D

Root position from G4: G4, B4, D5. Middle C is C4.

G on the guitar

Standard tuning (E A D G B E). Strings run low E on the left to high e on the right, frets downwards; × is a muted string, ○ an open string, and each dot shows the note it sounds, with the root in blue-green. Every shape below has G as its lowest note.

GGBBDGBGG
Open position
3 2 0 0 0 3 (low E to high e)
Sounds G2 B2 D3 G3 B3 G4
GGDDGGBBDDGG
E-shape barre, root on the E string at fret 3
3 5 5 4 3 3 (low E to high e)
Sounds G2 D3 G3 B3 D4 G4
10fr×GGDDGGBBDD
A-shape barre, root on the A string at fret 10
x 10 12 12 12 10 (low E to high e)
Sounds G3 D4 G4 B4 D5

The barre shapes are movable: an E-shape chord's root is the note under your first finger on the low E string, an A-shape chord's root is the note on the A string. Slide the same grip up or down to play major chords on other roots.

Inversions of G

An inversion puts a note other than the root in the bass. The name is what semicord's chord finder calls those notes played bottom to top; a slash name like C/E means a C chord with E in the bass.

PositionNotes, bass firstNamedListen
Root positionG B DG
1st inversionB D GG/B
2nd inversionD G BG/D

Where G fits

G is I in G major, IV in D major, V in C major, V in C minor. As V in a minor key it comes from the harmonic minor scale, whose raised seventh degree is this chord's third, B.