Chords in the Key of B Major

The key of B major has 5 sharps (F♯, C♯, G♯, D♯, A♯). Its scale is B – C♯ – D♯ – E – F♯ – G♯ – A♯, and its chords are B, C♯m, D♯m, E, F♯, G♯m, A♯dim.

The B major scale.

Chords in B major

Degree	Chord	Seventh chord	Notes
I	B	Bmaj7 Imaj7	B – D♯ – F♯
ii	C♯m	C♯m7 ii7	C♯ – E – G♯
iii	D♯m	D♯m7 iii7	D♯ – F♯ – A♯
IV	E	Emaj7 IVmaj7	E – G♯ – B
V	F♯	F♯7 V7	F♯ – A♯ – C♯
vi	G♯m	G♯m7 vi7	G♯ – B – D♯
vii°	A♯dim	A♯m7♭5 viiø7	A♯ – C♯ – E

Common chord progressions in B major

I – IV – V – I: B – E – F♯ – B
I – V – vi – IV: B – F♯ – G♯m – E
ii – V – I: C♯m – F♯ – B
I – vi – IV – V: B – G♯m – E – F♯

Related keys

G♯ minor (relative minor, same notes)
B minor (parallel minor, same starting note)
F♯ major (dominant key, a fifth up)
E major (subdominant key, a fifth down)