Key of C Major

The 7 diatonic chords in C Major, shown with their Roman numeral function and color-coded intervals.

C Major Scale & Chords

The C Major scale contains the notes: C, D, E, F, G, A, B.

The 7 diatonic chords are: I = C, ii = Dm, iii = Em, IV = F, V = G, vi = Am, vii° = Bdim.

I
C
R
M3
P5
ii
Dm
R
m3
P5
iii
Em
R
m3
P5
IV
F
R
M3
P5
V
G
R
M3
P5
vi
Am
R
m3
P5
vii°
Bdim
R
m3
♭5

Common Progressions in C Major

Pop (I-V-vi-IV)
C → G → Am → F
Classic Rock (I-IV-V)
C → F → G
50s (I-vi-IV-V)
C → Am → F → G
Jazz ii-V-I
Dm → G → C

Related Keys

A Minor (relative minor)C Minor (parallel minor)G Major (dominant)F Major (subdominant)
Build a Progression in C Major