Size Chart
PRINTABLE RING SIZER & GUIDE (recommended)
We recommend using this printable ring sizer for the most accurate reading if you don't know your ring size. There are two methods you can use with the printable ring sizer; method 1 requires an existing ring and method 2 requires scissors.
If you have a printer, please click the button below to download the printable ring sizer. Please make sure the scale is at 100% (the instructions are on the PDF).
OTHER METHODS (no printer required)
If you know your size
We use standard US sizing. If you already know your size, please use the ring size chart below to determine your size in US sizing.
| Diameter (mm) | Circumference (mm) | US | UK | French/German | Italian |
| 15.1 | 47.44 | 4 | H½ | 47.5 | 7.5 |
| 15.3 | 48.07 | 4.25 | I | 48 | 8 |
| 15.5 | 48.69 | 4.5 | I½ | 48.5 | 8.5 |
| 15.7 | 49.32 | 4.75 | J | 49.5 | 9.5 |
| 15.9 | 49.95 | 5 | J½ | 50 | 10 |
| 16.1 | 50.58 | 5.25 | K | 50.5 | 10.5 |
| 16.3 | 51.21 | 5.5 | K½ | 51 | 11 |
| 16.5 | 51.84 | 5.75 | L | 52 | 12 |
| 16.7 | 52.46 | 6 | L½ | 52.5 | 12.5 |
| 16.9 | 53.09 | 6.25 | M | 53 | 13 |
| 17.1 | 53.72 | 6.5 | M½ | 54 | 14 |
| 17.3 | 54.35 | 6.75 | N | 54.5 | 14.5 |
| 17.5 | 54.98 | 7 | N½ | 55 | 15 |
| 17.7 | 55.61 | 7.25 | O | 55.75 | 15.75 |
| 17.9 | 56.23 | 7.5 | O½ | 56.25 | 16.25 |
| 18.1 | 56.86 | 7.75 | P | 57 | 17 |
| 18.3 | 57.49 | 8 | P½ | 57.25 | 17.25 |
| 18.5 | 58.12 | 8.25 | Q | 58 | 18 |
| 18.7 | 58.75 | 8.5 | Q½ | 58.5 | 18.5 |
| 18.9 | 59.38 | 8.75 | R | 59.5 | 19.5 |
| 19.1 | 60 | 9 | R½ | 60 | 20 |
| 19.3 | 60.63 | 9.25 | S | 60.5 | 20.5 |
| 19.5 | 61.26 | 9.5 | S½ | 61.25 | 21.25 |
| 19.7 | 61.89 | 9.75 | T | 62 | 22 |
| 19.9 | 62.52 | 10 | T½ | 62.5 | 22.5 |
| 20.1 | 63.15 | 10.5 | U | 63 | 23 |
| 20.3 | 63.77 | 10.5 | U½ | 64 | 24 |
| 20.5 | 64.4 | 10.75 | V | 64.25 | 24.25 |
| 20.7 | 65.03 | 11 | V½ | 65 | 25 |
If you have an existing ring but do not have a printer:
Please measure the inner diameter of your current ring (the inner edge of your ring) and use the table above to measure the inside diameter against US sizing.
