Ring Size Chart
Ring Size Conversion Chart
This table provides a detailed comparison of ring sizes, including the relationship between inner circumference, inner diameter, and sizes in UK, USA, and Italy. Choosing the right ring size will ensure a comfortable fit and prevent the ring from sliding off or being too tight.
Ring Size Comparison
| Inner Circumference (mm) | Inner Diameter (mm) | UK | USA | Italy |
|---|---|---|---|---|
| 48 | 15.3 | I | 4 | 9 |
| 49 | 15.6 | J | 4½ | 10 |
| 50 | 15.9 | K | 5 | 11 |
| 51 | 16.2 | L | 5½ | 12 |
| 52 | 16.5 | L½ | 6 | 13 |
| 53 | 16.9 | M | 6½ | 14 |
| 54 | 17.2 | N | 7 | 15 |
| 55 | 17.5 | O | 7½ | 16 |
| 56 | 17.8 | P | 8 | 17 |
| 57 | 18.1 | P½ | 8¼ | 18 |
| 58 | 18.4 | Q | 8½ | 19 |
| 59 | 18.8 | Q½ | 9 | 20 |
| 60 | 19.1 | R | 9½ | 21 |
How to Measure Ring Size
Measurement Methods
- 1
String Method: Wrap a string around your finger, mark where it overlaps, then measure the length.
- 2
Paper Strip: Cut a strip of paper, wrap around finger, mark overlap, and measure the length.
- 3
Existing Ring: Measure the inner diameter of a ring that fits well on the same finger.
- 4
Professional Sizing: Visit a jewelry store for professional ring sizing with a ring sizer.
Ring Sizing Tips
- •
Measure at the end of the day when fingers are at their largest size.
- •
Measure at room temperature - cold makes fingers smaller, heat makes them larger.
- •
Wide bands typically need to be 1/2 size larger than narrow bands.
- •
Dominant hand fingers are usually slightly larger than non-dominant hand.
- •
If between sizes, choose the larger size for comfort, especially for everyday wear.
Note: Ring size standards may vary between countries and jewelry brands. For expensive or custom jewelry, it's highly recommended to get professionally sized at a jewelry store. Consider the width of the band - wider bands require larger sizes for the same comfort level. Some luxury brands may have their own unique sizing systems.