Measure a ring
Measure the inside diameter of your ring (ideally a simple ring) and refer to the chart to find the corresponding size.
Measure your finger circumference
Take a tape measure to measure your finger circumference and refer to the chart to find the corresponding size.
WOMEN
| Ring Diameter in mm |
Finger Circumference in mm |
Ring Size (US and UK) |
Ring Size (Japan) |
Internal Correspondance |
|---|---|---|---|---|
| 16.2 | 51 | 5 3/4 | 11 | S |
| 16.5 | 52 | 6 | 12 | |
| 16.8 | 53 | 6 1/4 | 13 | M |
| 17.2 | 54 | 6 3/4 | 14 | |
| 17.5 | 55 | 7 1/4 | 15 | L |
| 17.8 | 56 | 7 1/2 | 16 |
MEN
| Ring Diameter in mm |
Finger Circumference in mm |
Ring Size (US and UK) |
Ring Size (Japan) |
Internal Correspondance |
|---|---|---|---|---|
| 18.8 | 59 | 9 | 19 | S |
| 19.1 | 60 | 9 1/2 | 20 | |
| 19.4 | 61 | 9 3/4 | 21 | M |
| 19.7 | 62 | 10 | 22 | |
| 20 | 63 | 10 1/2 | 23 | L |
| 23 | 64 | 11 | 24 |