How we measure ring sizes
Follow the directions below to measure your finger:
1. Use a string or a strip of paper no wider than 1/2 inches (13mm).
2. Wrap it around the base of the appropriate finger.
3. Mark the point on the string / paper where it overlaps, forming a complete
circle.
4. With a ruler, measure the length from the starting end of the string / paper
to the pen mark.
5. Use this measurement and the chart to the bottom to determine your ring size.
6. For the most accurate reading, measure the finger by the end of the day.
(when it is the largest).
Can not be sure your ring size? Click here to download the ring
sizing chart
| UK: |
US |
Diameter mm |
Circumference mm |
| L |
5 3/4 |
16.3 |
51.24 |
| M |
6 1/4 |
16.7 |
52.46 |
| N |
6 3/4 |
17.1 |
53.72 |
| O |
7 |
17.5 |
54.98 |
| P |
7 1/2 |
17.9 |
56.23 |
| Q |
8 |
18.3 |
57.49 |
| R |
8 1/2 |
18.7 |
58.75 |
| S |
9 |
19.1 |
60.00 |
| T |
9 1/2 |
19.5 |
61.26 |
| U |
10 |
19.9 |
62.52 |
| V |
10 1/2 |
20.3 |
63.77 |
| W |
11 |
20.7 |
65.00 |
| X |
11 1/2 |
21.1 |
66.29 |
| Y |
12 |
21.5 |
67.51 |
| Z |
12 1/2 |
21.9 |
68.77 |
To calculate:
American size= (diameter-11.54)/(0.83)
Japanese size= (diameter-12.67)*3
European size= circumference-40
