Ring sizing
Measure an existing ring
Step 1: Select an existing ring that fits your desired finger.
Step 2: Measure the internal diameter of the ring in millimeters.
Step 3: Use the chart below to determine your ring size. If you're in between sizes, we suggest sizing up.
| US/CAN | UK/AUS | Inner Diameter (mm) | Inner Circumference (mm) | |
|---|---|---|---|---|
| 4 | I | 15.5 | 49 | |
| 4.5 | J | 15.8 | 50 | |
| 5 | K | 16.2 | 51 | |
| 5.5 | L | 16.5 | 52 | |
| 6 | M | 16.8 | 53 | |
| 6.5 | N | 17.2 | 54 | |
| 7 | O | 17.5 | 55 | |
| 7.5 | P | 17.8 | 56 | |
| 8 | Q | 18.4 | 58 | |
| 8.5 | R | 18.8 | 59 | |
| 9 | S | 19.0 | 60 | |
| 9.5 | T | 19.4 | 61 | |
| 10 | U | 19.7 | 62 | |
| 10.5 | V | 20.0 | 63 |