Guitar Chords in the Key of G Flat (G♭) Major

The chords in the key of G♭ Major

G Flat Major Chord G♭
A Flat minor Chord A♭m
B Flat minor Chord B♭m
C Flat Major Chord C♭
D Flat Major Chord D♭
E Flat Minor Chord E♭m
F Diminished Chord Fdim

G♭ Major - A♭ minor - B♭ minor - C♭ Major - D♭ Major - E♭ minor - F diminished (F°)

      G♭   A♭m   B♭m    C♭    D♭    E♭m   Fdim   
e|----2-----4-----1-----2-----4-----6----------|
B|----2-----4-----2-----4-----6-----7----------|
G|----3-----4-----3-----4-----6-----8-----1----|
D|----4-----6-----3-----4-----6-----8-----3----|
A|----------6-----1-----2-----4-----6-----2----|
E|----------4-----------------------------1----|
      I     ii   iii    IV    V     vi   vii    

The chord formula for any Major key is
Major - minor - minor - Major - Major - minor - diminished

A common way to number these chords is by Roman numerals
I - ii - iii - IV - V - vi - vii

(Major chords are usually capitalized, minor and diminished chords are lower case)

Key of G♭ Major Using 7th Chords

G Flat Major 7 Chord G♭Maj7
A Flat minor 7 Chord A♭m7
B Flat minor 7 Chord B♭m7
C Flat Major 7 Chord C♭Maj7
D Flat Dominant 7 Chord D♭7
E Flat Minor Chord E♭m7
F minor 7 Flat 5 Chord Fm7♭5

G♭ Major 7 - A♭ minor 7 - B♭ minor 7 - C♭ Major 7 - D♭ Dominant 7 - E♭ minor 7 - F minor 7 ♭5

       G♭Maj7  A♭m7  B♭m7 C♭Maj7  D♭7   E♭m7  Fm7♭5      
e|----------4-----1-----2-----4-----6-----4----|
B|----2-----4-----2-----4-----6-----7-----4----|
G|----3-----4-----1-----3-----4-----6-----4----|
D|----3-----4-----3-----4-----6-----8-----3----|
A|----x-----6-----1-----2-----4-----6----------|
E|----2-----4----------------------------------|
      I     ii   iii    IV    V     vi   vii