Every scale and chord, every instrument, one screen.

Chord types

A chord type is a formula: which notes above the root it takes, written as degrees of the major scale. Major is 1 3 5; flatten the 3rd and it is minor, 1 b3 5. Add a flat 7th to major and it is a dominant 7th, 1 3 5 b7. Each type below has its own page with the chord in every key and a comparison with the types it is confused with.

Chord formulas, with the notes on C
TypeSymbolFormulaNotes on C
MajorC1 3 5C E G
MinorCm1 b3 5C Eb G
Dominant 7C71 3 5 b7C E G Bb
Minor 7Cm71 b3 5 b7C Eb G Bb
Major 7Cmaj71 3 5 7C E G B
Power ChordC51 5C G
Sus4Csus41 4 5C F G
Sus2Csus21 2 5C D G
DiminishedCdim1 b3 b5C Eb Gb
Major 6C61 3 5 6C E G A
Minor 6Cm61 b3 5 6C Eb G A
Add9Cadd91 3 5 9C E G D
Dominant 9C91 3 5 b7 9C E G Bb D
Minor 9Cm91 b3 5 b7 9C Eb G Bb D
Major 9Cmaj91 3 5 7 9C E G B D
7sus4C7sus41 4 5 b7C F G Bb
Half DiminishedCm7b51 b3 b5 b7C Eb Gb Bb
Diminished 7Cdim71 b3 b5 bb7C Eb Gb Bbb
AugmentedCaug1 3 #5C E G#