Roman Numeral Chord Notation

The chords of the Major and Minor scales can be indicated by roman numerals.

Major chord: I, II, III, etc.

Minor chord: i, ii, iii, etc.

Augmented chord: I+, II+, III+, etc.

Diminished chord: vi°, vii°, etc.

Half-diminished chord: viiØ7, etc.

Extended chords: ii7, V9, V13, etc.

Altered tones or chords: #iv, ii#7

Chords of the Major Scale:

Chords of the Natural minor scale:

Chords of the Harmonic minor scale:

Chords of the Melodic minor scale (ascending):

Other examples: