All of our rings are crafted in standard US sizes. Refer to the chart below to see the corresponding inside diameter and circumference for each US size and to convert them to international sizes.
Download Ring Size Measuring Guide
If you have any questions or need assistance with sizing, our customer support team is here to help.
Inside Diameter | Inside Circumference | Size | Size | Size | Size |
MM | MM | US/CA | UK/AU/ZA | FR/DE | EUR/IT/ES |
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 | 48.0 | 4.5 | I | 48 | 8 |
15.7 | 49.3 | 5 | J-1/2 | 50 | 9.25 |
16.1 | 50.6 | 5.5 | K-1/2 | 51 | 10.5 |
16.5 | 51.9 | 6 | L-1/2 | 52 | 11.75 |
16.9 | 53.1 | 6.5 | M-1/2 | 53 | 13.25 |
17.3 | 54.4 | 7 | N-1/2 | 54 | 14.5 |
17.7 | 55.7 | 7.5 | 0-1/2 | 56 | 15.75 |
18.1 | 57.0 | 8 | P-1/2 | 57 | 17 |
18.5 | 58.3 | 8.5 | Q-1/2 | 58 | 18.25 |
19.0 | 59.5 | 9 | R-1/2 | 60 | 19.5 |
19.4 | 60.8 | 9.5 | S-1/2 | 61 | 20.75 |
19.8 | 62.1 | 10 | T-1/2 | 62 | 22 |
20.2 | 63.4 | 10.5 | U-1/2 | 63 | 23.25 |
20.6 | 64.6 | 11 | V-1/2 | 64 | 24.75 |
21 | 65.9 | 11.5 | W-1/2 | 66 | 26 |
21.4 | 67.2 | 12 | X-1/2 | 67 | 27.25 |
21.8 | 68.5 | 12.5 | Z | 68 | 28.5 |
22.2 | 69.7 | 13 | Z+1 | 70 | 29.25 |
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 |