Ring Sizing Guidelines
To determine your ring size the best way is to have your finger sized by a jeweler. Most stores will do this at no charge. If this is a gift and you do not want to alert the recipient, locate another ring that they own, bring this to the jeweler to determine the size. You can also use the chart below to determine ring sizes. This chart will help you determine the ring size you will require. Wrap a piece of string or strip of paper around your finger where you will be wearing the ring. Mark the string or paper where it overlaps to form a full circle. Then take the marked string or paper and measure it so you can compare it with the chart below. If it is a wide band, you might wish to add one size to accommodate for the extra width.
Ring Size
4 1/2
5
5 1/2
6
6 1/2
7
7 1/2
8
8 1/2
9
9 1/2
10
10 1/2
11
11 1/2
12
12 1/2
13
Inches
1-13/16
1-7/8
1-15/16
2
2-1/16
2-1/8
2-3/16
2-1/4
2-5/16
2-3/8
2-7/16
2-1/2
2-9/16
2-5/8
2-11/16
2-3/4
2-13/16
2-7/8
2-15/16
Millimeters
47.8
49
50.3
51.5
52.8
54
55.3
56.6
57.6
59.1
60.3
61.6
62.8
64.1
65.3
66.6
67.9
69.1
Below is another chart that will help you to determine your size using the inside diameter of the ring in millimeters. This is often a way to double check your findings from the paper method. You can also use a ring you currently wear and cross check it with the below chart.
Ring Size
4
5
6
7
8
9
10
11
12
13
14
Inside Diameter of Ring in Millimeters(mm)
15
15.5
16
17
18
19
20
20.5
21.5
22.5
23.5