Ring Size Guide
• To measure your finger size, start by cutting a strip of paper about 3 inches (8 cm) long—any type of paper.
• Wrap the strip around the finger you wish to measure, allowing it to overlap slightly. The paper should fit snugly but comfortably.
• Use a pen or pencil to mark where the ends overlap
• Lay it flat and use a ruler to measure the length in millimeters
• Use the chart below to find the corresponding ring size
* Avoid measuring when your fingers are too hot or cold, and don’t use fine string, as it might cling too closely to your finger’s shape.
| US SIZE | INSIDE DIAMETER (mm) | INSIDE CIRCUMFERENCE (mm) | US SIZE | INSIDE DIAMETER (mm) | INSIDE CIRCUMFERENCE (mm) |
| 3 | 14.1 | 44.2 | 8.5 | 18.5 | 58.3 |
| 3.5 | 14.5 | 45.5 | 9 | 18.9 | 59.5 |
| 4 | 14.9 | 46.8 | 9.5 | 19.3 | 60.8 |
| 4.5 | 15.3 | 48 | 10 | 19.7 | 62.1 |
| 5 | 15.7 | 49.3 | 10.5 | 20.1 | 63.4 |
| 5.5 | 16.1 | 50.6 | 11 | 20.5 | 64.6 |
| 6 | 16.5 | 51.9 | 11.5 | 20.9 | 65.9 |
| 6.5 | 16.9 | 53.1 | 12 | 21.3 | 67.2 |
| 7 | 17.3 | 54.4 | 12.5 | 21.7 | 68.5 |
| 7.5 | 17.7 | 55.7 | 13 | 22.1 | 69.8 |
| 8 | 18.1 | 57 | 13.5 | 22.5 | 71.1 |