This is a chart that will be extremely helpful for you to determine the ring size that you need. You can either make use of a tape or a small piece of string to measure the area that will be occupied by the ring. When it becomes a complete circle, make a mark on such string. This will be helpful for you to compare with the chart that is mentioned below.
| Inside Diameter | Inside Circumference | SIZE | ||||
|---|---|---|---|---|---|---|
| MM | MM | US / Canada | UK / Australia / South Africa | France / Germany | Europe / Italy / Spain | |
| 14.1 | 44.2 | 3 | F | 44 | 4.25 | |
| 14.5 | 45.5 | 3.5 | G | 45.5 | 5.5 | |
| 14.9 | 46.8 | 4 | H | 47 | 6.75 | |
| 15.3 | 48 | 4.5 | I | 48 | 8 | |
| 15.7 | 49.3 | 5 | J-½ | 50 | 9.25 | |
| 16.1 | 50.6 | 5.5 | K-½ | 51 | 10.5 | |
| 16.5 | 51.9 | 6 | L-½ | 52 | 11.75 | |
| 16.9 | 53.1 | 6.5 | M-½ | 53 | 13.25 | |
| 17.3 | 54.4 | 7 | N-½ | 54 | 14.5 | |
| 17.7 | 55.7 | 7.5 | O-½ | 56 | 15.75 | |
| 18.1 | 57 | 8 | P-½ | 57 | 17 | |
| 18.5 | 58.3 | 8.5 | Q-½ | 58 | 18.25 | |
| 19 | 59.5 | 9 | R-½ | 60 | 19.5 | |
| 19.4 | 60.8 | 9.5 | S-½ | 61 | 20.75 | |
| 19.8 | 62.1 | 10 | T-½ | 62 | 22 | |
| 20.2 | 63.4 | 10.5 | U-½ | 63 | 23.25 | |
| 20.6 | 64.6 | 11 | V-½ | 64 | 24.75 | |
| 21 | 65.9 | 11.5 | W-½ | 66 | 26 | |
| 21.4 | 67.2 | 12 | X-½ | 67 | 27.25 | |
| 21.8 | 68.5 | 12.5 | Z | 68 | 28.5 | |
| 22.2 | 69.7 | 13 | Z+1 | 70 | 29.75 | |
| 22.6 | 71 | 13.5 | Z+1.5 | 71 | 31 | |
| 23 | 72.3 | 14 | Z+2 | 72 | 32.25 | |
| 23.4 | 73.5 | 14.5 | Z+2.5 | 73.5 | 33.5 | |
| 23.8 | 74.8 | 15 | Z+3 | 75 | 34.75 | |
OTHER TIPS
1) *Measure your finger in warm temperatures at the end of the day.
2) *If your knuckle is a lot larger than the base of your finger,measure both the base of your finger and your knuckle and select a size between the two.
3) *When considering a wide band, move up a size from your measurement, for comfort’s sake.