| Inches | Millimeters | Ring size |
| 1 5/16 | 47 | 5 |
| 2 | 50 | 5 1/2 |
| 2 1/16 | 51.5 | 6 |
| 2 1/8 | 53 | 6 1/2 |
| 2 3/16 | 54.5 | 7 |
| 2 1/4 | 56.3 | 7 1/2 |
| 2 5/16 | 58 | 8 |
| 2 3/8 | 59 | 8 1/2 |
| 2 7/16 | 61 | 9 |
| 2 1/2 | 62.5 | 9 1/2 |
| 2 9/16 | 64 | 10 |
| 2 5/8 | 65.5 | 1/ 1/2 |
It is recommended that somebody else measures your finger size.
A. Wrap the strip of paper around your finger.
B. Mark perpendicular to where the paper overlaps.
C. Measure the paper against a ruler (from mark to mark).
D. Compare the length to the chart.