Did you know that rings are sized differently around the world?
It’s a fact that fingers essentially are the same shape around the world, but other nations measure them differently. We want to celebrate our differences with a chart! Conveniently these are the exact size range that we offer on our Kickstarter! Now would be a good time to order a size “P” ring! You should swing over there and take a look, but hurry our campaign ends May, 8th.
International Ring Sizing Conversion Chart
| Inside Diameter |
Inside Circumference |
Sizes |
| MM |
Inches |
MM |
Inches |
British & Australian |
US & Canada |
French & Russian |
German |
Japanese |
Swiss |
| 16.51 |
0.650 |
51.87 |
2.04 |
M |
6 |
52 3/4 |
16 1/2 |
12 |
12 3/4 |
| 16.71 |
0.658 |
52.50 |
2.07 |
M 1/2 |
6 1/4 |
– |
– |
– |
– |
| 16.92 |
0.666 |
53.16 |
2.09 |
N |
6 1/2 |
54 |
17 |
13 |
14 |
| 17.13 |
0.674 |
53.82 |
2.12 |
N 1/2 |
6 3/4 |
– |
– |
– |
– |
| 17.35 |
0.683 |
54.51 |
2.15 |
O |
7 |
55 1/4 |
17 1/4 |
14 |
15 1/4 |
| 17.45 |
0.687 |
54.82 |
2.16 |
O 1/2 |
7 1/4 |
– |
– |
– |
– |
| 17.75 |
0.699 |
55.76 |
2.20 |
P |
7 1/2 |
56 1/2 |
17 3/4 |
15 |
16 1/2 |
| 17.97 |
0.707 |
56.45 |
2.22 |
P 1/2 |
7 3/4 |
– |
– |
– |
– |
| 18.19 |
0.716 |
57.15 |
2.25 |
Q |
8 |
57 3/4 |
18 |
16 |
17 3/4 |
| 18.35 |
0.722 |
57.65 |
2.27 |
Q 1/2 |
8 1/4 |
– |
– |
– |
– |
| 18.53 |
0.729 |
58.21 |
2.29 |
Q 3/4 |
8 1/2 |
– |
18 1/2 |
17 |
– |
| 18.61 |
0.733 |
58.47 |
2.30 |
R |
8 5/8 |
59 |
– |
– |
19 |
| 18.69 |
0.736 |
58.72 |
2.31 |
R 1/4 |
8 3/4 |
– |
– |
– |
– |
| 18.80 |
0.740 |
59.06 |
2.32 |
R 1/2 |
8 7/8 |
– |
– |
– |
– |
| 18.89 |
0.748 |
59.34 |
2.35 |
R 3/4 |
9 |
– |
19 |
18 |
– |
| 19.10 |
0.752 |
60.00 |
2.36 |
S |
9 1/8 |
60 1/4 |
– |
– |
20 1/4 |
| 19.22 |
0.757 |
60.38 |
2.38 |
S 1/4 |
9 1/4 |
– |
– |
– |
– |
| 19.31 |
0.760 |
60.66 |
2.39 |
S 1/2 |
9 3/8 |
– |
– |
– |
– |
| 19.41 |
0.764 |
60.98 |
2.40 |
S 3/4 |
9 1/2 |
– |
19 1/2 |
19 |
– |
| 19.51 |
0.768 |
61.29 |
2.41 |
T |
9 5/8 |
61 1/2 |
– |
– |
21 1/2 |
| 19.62 |
0.772 |
61.64 |
2.43 |
T 1/4 |
9 3/4 |
– |
– |
– |
– |
| 19.84 |
0.781 |
62.33 |
2.45 |
T 1/2 |
10 |
– |
20 |
20 |
– |
| 20.02 |
0.788 |
62.89 |
2.48 |
U |
10 1/4 |
62 3/4 |
– |
21 |
22 3/4 |
| 20.20 |
0.797 |
63.46 |
2.50 |
U 1/2 |
10 1/2 |
– |
20 1/4 |
22 |
– |
| 20.32 |
0.800 |
63.84 |
2.51 |
V |
10 5/8 |
63 |
– |
– |
23 3/4 |
| 20.44 |
0.805 |
64.21 |
2.53 |
V 1/4 |
10 3/4 |
– |
– |
– |
– |
| 20.68 |
0.814 |
64.97 |
2.56 |
V 1/2 |
11 |
– |
20 3/4 |
23 |
– |
| 20.76 |
0.817 |
65.22 |
2.57 |
W |
11 1/8 |
65 |
– |
– |
25 |
| 20.85 |
0.821 |
65.50 |
2.58 |
W 1/4 |
11 1/4 |
– |
– |
– |
– |
| 20.94 |
0.824 |
65.78 |
2.59 |
W 1/2 |
11 3/8 |
– |
– |
– |
– |
| 21.08 |
0.830 |
66.22 |
2.61 |
W 3/4 |
11 1/2 |
– |
21 |
24 |
– |
| 21.18 |
0.834 |
66.54 |
2.62 |
X |
11 5/8 |
66 1/4 |
– |
– |
26 1/4 |
| 21.24 |
0.836 |
66.73 |
2.63 |
X 1/4 |
11 3/4 |
– |
– |
– |
– |
| 21.30 |
0.839 |
66.92 |
2.64 |
X 1/2 |
11 7/8 |
– |
– |
– |
– |
| 21.49 |
0.846 |
67.51 |
2.66 |
Y |
12 |
67 1/2 |
21 1/4 |
25 |
27 1/2 |
| 21.69 |
0.854 |
68.14 |
2.68 |
Y 1/2 |
12 1/4 |
– |
– |
– |
– |
| 21.89 |
0.862 |
68.77 |
2.71 |
Z |
12 1/2 |
68 3/4 |
21 3/4 |
26 |
28 3/4 |
| 22.10 |
0.870 |
69.43 |
2.73 |
Z +1/2 |
12 3/4 |
– |
– |
– |
– |
|
