This is a chart that will be extremely helpful for you to determine the ring size that you need. You can either make use of a tape measure or a small piece of string to measure the area that will be occupied by the ring. When it becomes a complete circle, make a mark on such a string. This will be helpful for you to compare with the chart that is mentioned below.
| Inside Diameter |
Inside Circumference |
SIZE |
| (in) |
(mm) |
(in) |
(mm) |
United States |
United Kingdom |
Italy |
France |
Germany |
India |
| Canada |
Australia |
Spain |
|
|
China |
| Mexico |
Ireland |
Netherlands |
|
|
Japan |
|
New Zealand |
Switzerland |
|
|
Turkey |
|
South Africa |
|
|
|
South America |
| 0.618 |
15.70 |
1.94 |
49.3 |
5 |
J½ |
9 |
49 |
15.75 |
9 |
| 0.634 |
16.11 |
1.99 |
50.6 |
5.5 |
K½ |
10.25 |
50.25 |
16.25 |
10 |
| 0.651 |
16.53 |
2.04 |
51.9 |
6 |
L½ |
11.5 |
51.5 |
16.5 |
12 |
| 0.666 |
16.91 |
2.09 |
53.1 |
6.5 |
M½ |
12.75 |
52.75 |
17 |
13 |
| 0.682 |
17.32 |
2.14 |
54.4 |
7 |
N½ |
14 |
54 |
17.25 |
14 |
| 0.698 |
17.74 |
2.19 |
55.7 |
7.5 |
O½ |
15.25 |
55.25 |
17.75 |
15 |
| 0.715 |
18.15 |
2.24 |
57 |
8 |
P½ |
16.5 |
56.5 |
18 |
16 |
| 0.731 |
18.57 |
2.29 |
58.3 |
8.5 |
Q½ |
17.75 |
57.75 |
18.5 |
17 |
| 0.746 |
18.95 |
2.34 |
59.5 |
9 |
R½ |
19 |
59 |
19 |
18 |
Notes:
1. Measure your finger in warm temperatures at the end of the day.
2. If your knuckle is a lot larger than the base of your finger, measure both the base of your finger and your knuckle and select a size between the two.
3. When considering a wide band, move up a size from your measurement, for comfort’s sake.
4. The most popular ring size are 7(U.S) & 8(U.S).
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