1. Find a piece of string.
2. Wrap it around the base of your finger.
3. Use a pen to mark the point on the string where it overlaps to form a complete circle.
4. With a ruler, measure the length from the starting end of the string to the pen mark.
5. Use the measurement and the chart below to determine your ring size.
Ring Size (USA) |
Measured Length - Inches |
Measured Length - MM |
3 |
1 11/16 |
44 |
4 |
1 13/16 |
46.5 |
5 |
1 15/16 |
49 |
6 |
2 1/16 |
51.5 |
7 |
2 3/16 |
54 |
8 |
2 5/16 |
56.6 |
9 |
2 7/16 |
59.1 |
10 |
2 9/16 |
61.6 |
11 |
2 11/16 |
64.1 |
12 |
2 13/16 |
66.6 |
13 |
2 15/16 |
69.1 |