Ring Sizing Guide and Tips
SIZE GUIDE
Choosing the correct size ensures comfort, safety, and the ideal fit on your finger.
📏 How to measure
- Measure the inner diameter of a ring you already wear.
- Use a ruler or caliper and measure from inner edge to inner edge
- Compare the value in millimetres (mm)
📐 Available sizes
| Circumference | Diameter | US | UK | EU |
|---|---|---|---|---|
| 46 mm | 14.6 mm | 3.75 | F | 46 |
| 48 mm | 15.3 mm | 4.5 | H | 48 |
| 50 mm | 16 mm | 5 | J | 50 |
| 52 mm | 16.5 mm | 6 | N | 52 |
| 54 mm | 17.2 mm | 7 | P | 54 |
| 56 mm | 17.8 mm | 7.5 | R | 56 |
| 58 mm | 18.5 mm | 8.5 | T | 58 |
| 62 mm | 19 mm | 9 | V | 62 |
| 64 mm | 19.8 mm | 10 | X | 64 |
| 66 mm | 20.4 mm | 10.5 | Z | 66 |
💡 BLACKLINE tip
If you are between two sizes, choose the larger one to ensure comfort throughout the day.
Choose with confidence. The right fit makes all the difference.