Ring Size Conversion Chart
|
INSIDE
CIRCUMFERENCE (mm)
|
US, CANADA
& MEXICO
|
UK, AUSTRALIA
& IRELAND
|
FRANCE
|
GERMANY, RUSSIA,
UKRAINE, & ASIA
|
||
|
3.0
|
F
|
44
|
14
|
||
|
3.25
|
F 1/2
|
44.625
|
14.25
|
||
|
3.5
|
G
|
45.25
|
14.5
|
||
|
3.75
|
G 1/2
|
45.875
|
14.75
|
||
|
4.0
|
H
|
46.5
|
15
|
||
|
4.25
|
h 1/2
|
47.125
|
15.25
|
||
|
4.5
|
I
|
47.75
|
15.5
|
||
|
4.75
|
J
|
48.375
|
---
|
||
|
5.0
|
J 1/2
|
49
|
15.75
|
||
|
5.25
|
K
|
49.625
|
16
|
||
|
5.5
|
K 1/2
|
50.25
|
16.25
|
||
|
5.75
|
L
|
50.875
|
---
|
||
|
6.0
|
L 1/2
|
51.5
|
16.5
|
||
|
6.25
|
M
|
52.125
|
16.75
|
||
|
6.5
|
M 1/2
|
52.75
|
17
|
||
|
6.75
|
N
|
53.375
|
---
|
||
|
7.0
|
N 1/2
|
54
|
17.25
|
||
|
7.25
|
O
|
54.625
|
17.5
|
||
|
7.5
|
O 1/2
|
55.25
|
17.75
|
||
|
7.75
|
P
|
55.875
|
---
|
||
|
8.0
|
P 1/2
|
56.5
|
18
|
||
|
8.25
|
Q
|
57.125
|
18.25
|
||
|
8.5
|
Q 1/2
|
57.75
|
18.5
|
||
|
8.75
|
R
|
58.375
|
18.75
|
||
|
9.0
|
R 1/2
|
59
|
19
|
||
|
9.25
|
S
|
59.625
|
19.25
|
||
|
9.5
|
S 1/2
|
60.25
|
19.5
|
||
|
9.75 | T | 60.875 | 19.75 | ||
|
10.0 | T 1/2 | 61.5 | 20 | ||
|
10.25 | T 1/2 | 61.5 | 20 | ||
|
10.25 | U | 62.125 | 20.25 | ||
|
10.5 | U 1/2 | 62.75 | 20.5 | ||
|
10.75 | V | 63.375 | --- | ||
|
11.0 | V 1/2 | 64 | 20.75 | ||
|
11.25 | W | 64.625 | --- | ||
|
11.5 | W 1/2 | 65.25 | 21 | ||
|
11.75 | X | 65.875 | --- | ||
|
12.0 | X 1/2 | 66.5 | 21.25 | ||
|
12.25 | Y | 67.125 | 21.5 | ||
|
12.5 | Z | 67.75 | 21.75 | ||
|
12.75 | Z 1/2 | 68.375 | --- | ||
|
13 | --- | 69 | 22 |