Guitar Chords in the Key of E Major

The chords in the key of E Major

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

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

      E     F#m   G#m   A     B     C#m   D#dim 
      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)