Tools > Chord Formulas

Chord Formulas

Every chord has a formula. This formula indicates which notes of the major scale are in the chord. In the table below you will see that a major chord uses the I, III and V (1st, 3rd and 5th) notes of the major scale. Below the table of chord formulas you will see a table showing the notes of the major scale in all 12 keys.

Example - just say we want to know the notes in the chord Dmaj7. We would look up 'Major 7' in the table below and see it uses the I, III, V and VII (1st, 3rd, 5th, and 7th) notes of the major scale. Because it is Dmaj7 we are talking about the D major scale. If you look at the notes of the D major scale (in the table at the bottom of this page) you will see that the I, III, V and VII notes are: D, F#, A and C#. Therefore the Dmaj7 chord uses the notes: D, F#, A and C#.

Chord Formula
Major I - III - V
Major 6 I - III - V - VI
Major 6 add 9 I - III - V - VI - IX
Major 7 I - III - V - VII
Major 9 I - III - V - VII - IX
Major 7(#11) I - III - V - VII - IX - #XI
Major 7(13) I - III - V - VII - XIII
Major 7(9,13) I - III - V - VII - IX - XIII
Major 7#5 I - III - #V - VII
Major 7#5(9) I - III - #V - VII - IX
MinMaj 7 I - bIII - V - VII
MinMaj 7(9) I - bIII - V - VII - IX
7b5 I - III - bV - bVII
7 I - III - V - bVII
7 b10 I - III - V - bVII - bX
7 aug5 I - III - #V - bVII
7 sus4 I - IV - V - bVII
7 (9) I - III - V - bVII - IX
7 (b9) I - III - V - bVII - bIX
7 (#9) I - III - V - bVII - #IX
7 (13) I - III - V - bVII - XIII
7 (b13) I - III - V - bVII - bXIII
7 (9,13) I - III - V - bVII - IX - XIII
7 (b9,13) I - III - V - bVII - bIX - XIII
7 (#9,13) I - III - V - bVII - #IX - XIII
7 (b9,b13) I - III - V - bVII - bIX - bXIII
7 (#9,b13) I - III - V - bVII - #IX - bXIII
7 (9,#11) I - III - V - bVII - IX - #XI
7 (9,#11,13) I - III - V - bVII - IX - #XI - XIII
9 sus4 I - IV - V - bVII - IX
11 I - III - V - bVII - IX - XI
13 I - III - V - bVII - IX - XI - XIII
b5 I - III - bV
Minor I - bIII - V
Minor 6 I - bIII - V - VI
Minor 6 add 9 I - bIII - V - VI - IX
Minor 7 I - bIII - V - bVII
Minor 7b5 I - bIII - bV - bVII
Minor 7 (9) I - bIII - V - bVII - IX
Minor 7 (9,11) I - bIII - V - bVII - IX - XI
Minor add9 I - bIII - V - IX
Augmented I - III - #V
Augmented 7 I - III - #V - bVII
Diminished I - bIII - bV
Diminished 7 I - bIII - bV - VI
Suspended 4 I - IV - V
Suspended 2 I - II - V
Add 9 I - III - V - IX

 

Key I II or IX III IV or XI V VI or XIII VII Octave
A A B C# D E F# G# A
A# A# C D D# F G A A#
B B C# D# E F# G# A# B
C C D E F G A B C
C# C# D# F F# G# A# C C#
D D E F# G A B C# D
D# D# F G G# A# C D D#
E E F# G# A B C# D# E
F F G A A# C D E F
F# F# G# A# B C# D# F F#
G G A B C D E F# G
G# G# A# C C# D# F G G#