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Ring Size Guide
Find your perfect fit with our international ring measurement chart.
| US / Canada | Inside Diameter (mm) | Inside Circumference (mm) | UK / Australia |
|---|---|---|---|
| 3 | 14.1 mm | 44.2 mm | F |
| 4 | 14.9 mm | 46.8 mm | H |
| 5 | 15.7 mm | 49.3 mm | J 1/2 |
| 6 | 16.5 mm | 51.9 mm | L 1/2 |
| 7 (Standard) | 17.3 mm | 54.4 mm | N 1/2 |
| 8 | 18.1 mm | 57.0 mm | P 1/2 |
| 9 | 18.9 mm | 59.5 mm | R 1/2 |
| 10 | 19.8 mm | 62.1 mm | T 1/2 |
| 11 | 20.6 mm | 64.6 mm | V 1/2 |
| 12 | 21.4 mm | 67.2 mm | X 1/2 |
| 13 | 22.2 mm | 69.7 mm | Z 1/2 |
| 14 | 23.0 mm | 72.3 mm | Z+3 |
💡 Sizing Tip: If your knuckle is significantly larger than the base of your finger, measure both and choose a size in between. Free 30-day resizing is included with your Bloomer Diamonds purchase!
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