Guitar Chords in the Key of F Major

The chords in the key of F Major

F Major Chord F
G minor Chord Gm
A minor Chord Am
B Flat Major Chord B♭
C Major Chord C
D Minor Chord Dm
E Diminished Chord Edim

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

      F     Gm    Am    B     C     Dm    Edim  
      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)