Ring Size Conversion Chart
| Circumference (MM) |
Diameter (MM) |
US Ring Size |
European Ring Size |
UK Ring Size |
| 46.8 |
14.9 |
4 |
47 |
H 1/2 |
| 48 |
15.3 |
4.5 |
48 |
I 1/2 |
| 49.3 |
15.7 |
5 |
49 |
J 1/2 |
| 50.6 |
16.1 |
5.5 |
- |
K 1/2 |
| 51.9 |
16.5 |
6 |
52 |
L 1/2 |
| 53.1 |
16.9 |
6.5 |
53 |
M 1/2 |
| 54.4 |
17.3 |
7 |
54 |
N 1/2 |
| 55.7 |
17.7 |
7.5 |
- |
O 1/2 |
| 57 |
18.1 |
8 |
57 |
P 1/2 |
| 58.3 |
18.5 |
8.5 |
58 |
Q 1/2 |
| 59.5 |
19 |
9 |
- |
R 1/2 |
| 60.8 |
19.4 |
9.5 |
61 |
S 1/2 |
| 62.1 |
19.8 |
10 |
62 |
T 1/2 |
| 63.4 |
20.2 |
10.5 |
63 |
U 1/2 |
| 64.6 |
20.6 |
11 |
- |
V 1/2 |
| 65.9 |
21 |
11.5 |
66 |
W 1/2 |
| 67.2 |
21.4 |
12 |
67 |
X 1/2 |
| 68.5 |
21.8 |
12.5 |
68 |
Z |
| 69.7 |
22.2 |
13 |
70 |
- |
| 71 |
22.6 |
13.5 |
- |
Z+2 |
|
