A man's shirt collar size is a measure of the neck circumference in inches or centimeters.
|
Collar Size and Circumference in Inces
|
Circumference in cm
|
Size Designation
|
|
14
|
35.6
|
XXS
|
|
14.5
|
36.8
|
XS
|
|
15
|
38.1
|
S
|
|
15.5
|
39.4
|
M
|
|
16
|
40.6
|
L
|
|
16.5
|
41.9
|
L
|
|
17
|
43.2
|
XL
|
|
17.5
|
44.5
|
XXL
|
|
18
|
45.7
|
XXL
|
|
18.5
|
47.0
|
XXL
|
|
19
|
48.3
|
XXXL
|
|
19.5
|
49.5
|
XXXL
|
|
20
|
50.8
|
4XL
|
|
20.5
|
52.1
|
4XL
|
|
21
|
53.3
|
5XL
|
|
21.5
|
54.6
|
5XL
|
Chest size/circumference also tends to increase as the collar size increases.
