KeysB major
Key reference · diatonic chords

The Key of B major

The key of B major is built on the B major scale and contains the seven chords B, C#m, D#m, E, F#, G#m, and A#dim. Its key signature has 5 sharps (F#, C#, G#, D#, A#).

Below are those chords by scale degree, the progressions they build, and the related scale and key you can reach from here.

Chords in the key of B major

IBiiC#miiiD#mIVEVF#viG#m
vii°A#dim

Common progressions in B major

I – IV – VBEF#
I – V – vi – IVBF#G#mE
ii – V – IC#mF#B
I – vi – IV – VBG#mEF#

The B major scale on the fretboard →

See every note of the scale this key is built from, mapped across the neck.

Explore keys on the Circle of Fifths →

The free interactive circle shows every key signature and the chords that belong to each key.

Other major keys

C majorDb majorD majorEb majorE majorF majorF# majorG majorAb majorA majorBb major

Frequently asked questions

What chords are in the key of B major?
The key of B major contains seven chords, one on each note of the scale: B, C#m, D#m, E, F#, G#m, and A#dim. In Roman numerals those are I, ii, iii, IV, V, vi, vii°.
What is the key signature of B major?
B major has 5 sharps (F#, C#, G#, D#, A#). It shares that key signature with its relative minor, G# minor.
What are common chord progressions in B major?
I – IV – V is B – E – F#; I – V – vi – IV is B – F# – G#m – E. The I, IV, and V chords (B, E, F#) do most of the work in popular music.
What is the relative minor of B major?
The relative minor of B major is G# minor. It uses the same notes and the same key signature, just starting from a different home note.