Chord Builder & Reference

Build chord voicings from a root and chord symbol.

Root note Chord type

C4 – E4 – G4

Notes

0, 4, 7

Semitones from root

Brightest triad — happy, stable.

Symbol	Name	Semitones	Notes
—	Major	0, 4, 7	Brightest triad — happy, stable.
m	Minor	0, 3, 7	Darker triad — sad or contemplative.
dim	Diminished	0, 3, 6	Two stacked minor thirds. Tense, unstable.
aug	Augmented	0, 4, 8	Two stacked major thirds. Symmetrical.
sus2	Suspended 2nd	0, 2, 7	3rd replaced by 2nd.
sus4	Suspended 4th	0, 5, 7	3rd replaced by 4th.
6	Major 6th	0, 4, 7, 9	Major triad + 6th.
m6	Minor 6th	0, 3, 7, 9	Minor triad + 6th.
7	Dominant 7th	0, 4, 7, 10	Major triad + minor 7th. Bluesy.
M7	Major 7th	0, 4, 7, 11	Major triad + major 7th. Jazzy.
m7	Minor 7th	0, 3, 7, 10	Minor triad + minor 7th.
mM7	Minor-Major 7th	0, 3, 7, 11	Minor triad + major 7th.
dim7	Diminished 7th	0, 3, 6, 9	Fully diminished — symmetric.
m7b5	Half-Diminished 7th	0, 3, 6, 10	Minor 7th with flat 5.
aug7	Augmented 7th	0, 4, 8, 10	Augmented triad + minor 7th.
add9	Add 9	0, 4, 7, 14	Major triad + 9th (no 7th).
9	Dominant 9th	0, 4, 7, 10, 14	Dominant 7th + 9th.
M9	Major 9th	0, 4, 7, 11, 14	Major 7th + 9th.
m9	Minor 9th	0, 3, 7, 10, 14	Minor 7th + 9th.
11	Dominant 11th	0, 4, 7, 10, 14, 17	Dominant 9th + 11th.
13	Dominant 13th	0, 4, 7, 10, 14, 17, 21	Dominant 11th + 13th.

About this tool

Pick a root note and a chord type (major, minor, m7b5, sus2, dominant 9, etc.) and see the notes that make up the chord.