Guitar Chords in the Key of D Major

The chords in the key of D Major

D Major Chord D
E minor Chord Em
F Sharp minor Chord F♯m
G Major Chord G
A Major Chord A
B Minor Chord Bm
C Sharp Diminished Chord C♯dim

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

      D     Em   F#m    G     A     Bm  C#dim   
e|----3-----0-----2-----3-----0-----2----------|
B|----2-----0-----2-----0-----2-----3-----5----|
G|----3-----0-----2-----0-----2-----4-----6----|
D|----0-----2-----4-----0-----2-----4-----5----|
A|----------2-----4-----2-----0-----2-----4----|
E|----------0-----2-----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 D Major Using 7th Chords

D Major 7 Chord D Maj7
E minor 7 Chord Em7
F Sharp minor 7 Chord F♯m7
G Major 7 Chord G Maj7
A Dominant 7 Chord A7
B Minor 7 Chord Bm7
C Sharp Minor 7 ♭5 Chord C♯m7♭5

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

    DMaj7  Em7   F#m7 GMaj7   A7   Bm7  C♯m7♭5   
e|----2-----0-----2-----2-----0-----2----------| 
B|----2-----0-----2-----0-----2-----3-----5----| 
G|----2-----0-----2-----0-----0-----2-----4----| 
D|----0-----0-----2-----0-----2-----4-----5----| 
A|----------2-----4-----2-----0-----2-----4----| 
E|----------0-----2-----3----------------------| 
      I     ii   iii    IV    V     vi   vii