Ring Chart
|
Inside Measurement
|
Country |
||||||||
|
Diameter |
Diameter |
Circumference |
Circumference |
UK Australia Ireland |
US Canada |
Switzerland |
Germany |
France |
Japan |
|
(inches)
|
(mm) |
(inches) |
(mm) |
Ring Size |
|||||
|
0.618 |
15.9 |
1.966 |
49.3 |
K |
5 1/4 |
10.00
|
|
|
|
|
0.650 |
16.5 |
2.041 |
51.8 |
L |
6 |
12.75 |
|
|
11
|
|
0.666 |
16.9 |
2.091 |
53.1 |
M |
6 1/2 |
14.00 |
|
|
13
|
|
0.690 |
17.5 |
2.167 |
55.0 |
O |
7 1/4 |
|
|
|
|
|
0.706 |
17.9 |
2.217 |
56.3 |
P |
7 3/4 |
|
|
|
|
|
0.730 |
18.5 |
2.292 |
58.2 |
Q |
8 1/2 |
|
18.5 |
58 |
17
|
|
0.754
|
19.2 |
2.368 |
60.1 |
S |
9 |
|
19 |
59 1/4 |
18 |
|
0.762 |
19.4 |
2.393 |
60.8 |
T |
9 1/2 |
|
19.5 |
60 1/2 |
19 |
|
0.786 |
20.0 |
2.468 |
62.7 |
U |
10 1/4 |
|
20 |
61 3/4 |
20 |