Chords on Flat are composed of several elements:
- A root note
- A kind (Major, minor, diminished..)
- An optional “alt” for altered
- An optional bass note for inversions
Root note
To input a chord on Flat, you must first enter the root note.
To do so, input the letter, and then enter b
if you want the root note to be flat, or #
if you want the chord to be sharp.
You can also input double accidentals with bb
or ##
.

Kind
Here is how you can input if the chord is Major, minor, diminished, Dominant, and so on.
You will find below the list of chords supported by Flat, using C as a root.
We not storing just the text, but also the semantic of the chord to provide audio playback.
If one chord you would like to use is missing from this list, please contact our product team and we will add it.
2 notes chords
Chord name |
input in Flat |
notes |
Appearance |
C5 |
C5 |
C G |
 |
Triad chords
Chord name |
input in Flat |
notes |
Appearance |
Major |
C or Cmaj |
C E G |
 |
minor |
Cm or Cmin or C- |
C Eb G |
 |
diminished |
Cdim |
C Eb Gb |
 |
Augmented |
Caug or C+ |
C E G# |
 |
Suspended 2nd |
Csus2 or C(sus2) |
C D G |
 |
Suspended 4th |
Csus4 or C(sus4) |
C F G |
 |
4 notes chords
Dominant 7 chords
Chord name |
input in Flat |
notes |
Appearance |
Dominant 7th |
C7 |
C E G Bb |
 |
Major 7th |
Cmaj7 |
C E G B |
 |
minor 7th |
Cm7 |
C Eb G Bb |
 |
minor Major 7th |
Cmmaj7 or Cm(maj7) |
C Eb G B |
 |
Augmented 7th |
C+7 |
C E G# B# |
 |
diminished 7th |
Cdim7 |
C Eb Gb A |
 |
half-diminished 7th |
C1/2dim7 |
C Eb Gb Bb |
 |
minor 7th flat 5 |
Cm7(b5) |
C Eb Gb Bb |
 |
minor 7th sharp 5 |
Cm7(#5) |
C Eb Gb B# |
 |
7th flat 5 |
C7(b5) |
C E Gb Bb |
 |
7th sharp 5 |
C7(#5) or C7+5 |
C E G# Bb |
 |
Major 7th flat 5 |
Cmaj7(b5) |
C E Gb B |
 |
Major 7th sharp 5 |
Cmaj7(#5) |
C E G# B |
 |
Dominant 6 chords
Chord name |
input in Flat |
notes |
Appearance |
Major 6th |
C6 |
C E G A |
 |
minor 6th |
Cm6 |
C Eb G A |
 |
Triads with added degrees
Chord name |
input in Flat |
notes |
Appearance |
add 2 |
C(add2) or C2 |
C D E G |
 |
add 9 |
C(add9) |
C E G D |
 |
add 4 |
C(add4) |
C E F G |
 |
minor add 9 |
Cm(add9) |
C Eb G D |
 |
Augmented add 9 |
C+(add9) |
C E G# D |
 |
Augmented flat 9 |
C+(b9) |
C E G# Db |
 |
Augmented sharp 9 |
C+(#9) |
C E G# D# |
 |
Augmented Major 7th |
C+maj7 |
C E G# B |
 |
Other chords
Chord name |
input in Flat |
notes |
Appearance |
Dominant 9th, omit 5 |
C9(omit5) |
C E Bb D |
 |
5 notes chords
Dominant 9 chords
Chord name |
input in Flat |
notes |
Appearance |
Dominant 9th |
C9 |
C E G Bb D |
 |
minor 9th |
Cm9 |
C Eb G Bb D |
 |
Major 9th |
Cmaj9 |
C E G B D |
 |
Augmented 9th |
C+9 |
C E G# Bb D |
 |
diminished 9th |
Cdim9 |
C Eb Gb A D |
 |
half diminished 9th |
C1/2dim9 |
C Eb Gb Bb D |
 |
minor Major 9th |
Cm(maj9) |
C Eb G B D |
 |
Dominant 9th flat 5 |
C9(b5) |
C E Gb Bb D |
 |
Dominant 9th suspended 4th |
C9(sus4) |
C F G Bb D |
 |
minor 9th flat 5 |
Cm9(b5) |
C Eb Gb Bb D |
 |
Other chords
Chord name |
input in Flat |
notes |
Appearance |
6th/9th |
C69 |
C E G A D |
 |
7th flat 9 |
C7(b9) |
C E G Bb Db |
 |
7th flat 5 flat 9 |
C7(b5b9) |
C E Gb Bb Db |
 |
7th sharp 9 |
C7(#9) |
C E G Bb D# |
 |
7th flat 11 |
C7(b11) |
C E G Bb Fb |
 |
7th sharp 11 |
C7(#11) |
C E G Bb F# |
 |
7th add 13 |
C7(13) |
C E G Bb A |
 |
7th flat 13 |
C7(b13) |
C E G Bb Ab |
 |
7th sharp 13 |
C7(#13) |
C E G Bb A# |
 |
minor 7th add 4 |
Cm7(add4) |
C Eb F G Bb |
 |
minor 7th add 13 |
Cm7(13) |
C Eb G Bb A |
 |
Major 7th sharp 11 |
Cmaj7(#11)) |
C E G B F# |
 |
6 notes chords
Dominant 11 chords
Chord name |
input in Flat |
notes |
Appearance |
Dominant 11th |
C11 |
C E G Bb D F |
 |
minor 11th |
Cm11 |
C Eb G Bb D F |
 |
Major 11th |
Cmaj11 |
C E G B D F |
 |
minor 11th flat 5 |
Cm11(b5) |
C Eb Gb Bb D F |
 |
Other chords
Chord name |
input in Flat |
notes |
Appearance |
Major 7th sharp 9 sharp 11 |
Cmaj7(#9#11) |
C E G B D# F# |
 |
Major 7th sharp 9 flat 13 |
Cmaj7(#9b13) |
C E G B D# Ab |
 |
Dominant 9th sharp 11 |
C9(#11) |
C E G Bb D F# |
 |
Dominant 9th flat 13 |
C9(b13) |
C E G Bb D A# |
 |
Dominant 9th sus 4 add 13 |
C9(sus4,13) |
C F G Bb D A |
 |
Major 9th sharp 11 |
Cmaj9(#11) |
C E G B D F# |
 |
7 notes chords
Dominant 13 chords
Chord name |
input in Flat |
notes |
Appearance |
Dominant 13th |
C13 |
C E G Bb D F A |
 |
minor 13th |
Cm13 |
C Eb G Bb D F A |
 |
Major 13th |
Cmaj13 |
C E G B D F A |
 |
Dominant 13th flat 5 |
C13(b5) |
C E Gb Bb D F A |
 |
Dominant 13th sharp 11 |
C13(#11) |
C E G Bb D F# A |
 |
Dominant 13th sharp 5 sharp 9 |
C13(#5#9) |
C E G# Bb D# F A |
|
Major 13th flat 5 |
Cmaj13(b5) |
C E Gb B D F A |
 |
Alternate
You need to type alt
if you want the chord to be alternate.
For instance: C7alt

Bass inversion
When you have a bass inversion, you can write a /
, then the bass in the same way you have been inputting the root.
For instance: C/E
, or C#/E#
.
