Wrap a piece of string around the base of your finger.
Mark where the string overlaps.
Measure the length from the end of the string to the mark.
Use a ring sizing chart to match your measurement with the corresponding ring size.
Measure (mm) | European ring size* | UK & USA ring size | Japanese ring size |
13.06 | 41 | 1 3⁄4 | 1 |
13.38 | 42 | 2 1⁄4 | 2 |
13.69 | 43 | 2 1⁄2 | 3 |
14.01 | 44 | 3 | 4 |
14.33 | 45 | 3 1⁄4 | 5 |
14.65 | 46 | 3 3⁄4 | 6 |
14.97 | 47 | 4 | 7 |
15.29 | 48 | 4 1⁄2 | 8 |
15.61 | 49 | 4 3⁄4 | 9 |
15.92 | 50 | 5 1⁄4 | 10 |
16.24 | 51 | 5 3⁄4 | 11 |
16.56 | 52 | 6 | 12 |
16.88 | 53 | 6 1⁄4 | 13 |
17.20 | 54 | 6 3⁄4 | 14 |
17.52 | 55 | 7 1⁄4 | 15 |
17.83 | 56 | 7 1⁄2 | 16 |
18.15 | 57 | 8 | 17 |
18.47 | 58 | 8 1⁄4 | 18 |
18.79 | 59 | 8 3⁄4 | 19 |
19.11 | 60 | 9 | 20 |
19.43 | 61 | 9 1⁄2 | 21 |
19.75 | 62 | 10 | 22 |
20.06 | 63 | 10 1⁄4 | 23 |
20.38 | 64 | 10 3⁄4 | 24 |