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

The chords in the key of A♭ Major

A flat Major Chord A♭
B flat minor Chord B♭m
C minor Chord Cm
D flat Major Chord D♭
E flat Major Chord E♭
F minor Chord Fm
G diminished Chord Gdim

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

      A♭   B♭m    Cm    D♭    E♭    Fm   Gdim   
e|----4-----1-----3-----4-----6-----1----------|
B|----4-----2-----4-----6-----8-----1----------|
G|----5-----3-----5-----6-----8-----1-----3----|
D|----6-----3-----5-----6-----8-----3-----5----|
A|----6-----1-----3-----4-----6-----------4----|
E|----4-----------------------------------3----|
      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 A♭ Major Using 7th Chords

A flat Major Chord A♭Maj7
B flat minor Chord B♭m7
C minor Chord Cm7
D flat Major 7 Chord D♭Maj7
E flat Dominant 7 Chord E♭7
F minor 7 Chord Fm7
G minor 7 ♭5 Chord Gm7♭5

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

  A♭Maj7  B♭m7  Cm7  D♭Maj7  E♭7   Fm7  Gm7♭5       
e|----4-----1-----3-----4-----3-----4----------|     
B|----4-----2-----4-----6-----2-----4-----2----|     
G|----5-----1-----3-----5-----3-----5-----3----|     
D|----5-----3-----5-----6-----1-----3-----3----|     
A|----6-----1-----3-----4-----------------x----|     
E|----4-----------------------------------3----|     
      I     ii   iii    IV    V     vi   vii