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Ring size guide
Rings are listed in the nearest US size, with the inside diameter in millimeters next to it. The surest way to choose is to measure a ring you already own and match the millimeters below.
Measure a ring you already own
- Pick a ring that fits the finger you'll wear this one on.
- Measure the inside diameter, edge to edge, in millimeters. A ruler works; a caliper is better.
- Find that number in the table and choose the matching size. If you're between two, choose the larger.
Measure your finger
- Wrap a strip of paper snugly around the base of the finger and mark where it overlaps.
- Measure the strip in millimeters — that's the circumference. Divide by 3.14 to get the diameter, then find that number in the table.
- Fingers are larger at the end of the day and in warm weather. Measure then.
| US size | Inside diameter |
|---|---|
| 4½ | 15.3 mm |
| 5 | 15.6 mm |
| 5¼ | 15.9 mm |
| 5¾ | 16.2 mm |
| 6 | 16.6 mm |
| 6½ | 16.9 mm |
| 6¾ | 17.2 mm |
| 7¼ | 17.5 mm |
| 7½ | 17.8 mm |
| 8 | 18.1 mm |
| 8½ | 18.5 mm |
| 9¼ | 19.1 mm |
If you're between two sizes, choose the larger. Wide bands fit tighter than thin ones, so go up if a band is wide. If a ring arrives and doesn't fit, our 30-day return policy covers unworn rings.