Seventh Chord Name

Major Seventh

Major minor Seventh or
Dominant Seventh

Minor Seventh

Half Diminished

Fully Diminished or
Diminished Seventh

Lower third

M

M

m

m

m

middle third

m

m

M

m

m

upper third

M

m

m

M

m

TRIAD

(Root to fifth)

M

M

m

d

d

Seventh
(from root to seventh)

M

m

m

m

d

Triad/Seventh Symbol

MM

Mm

mm

dm

dd

Koska
System

M7

Mm⁷

m7

^Ø7

°7

Pop/Jazz
Symbol

C^Maj7

C⁷

Cm⁷

Cm^{7 b5}

C^dim7