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68.5 mm Ring Size
A ring with an inner circumference of 68.5 mm measures US 12.5 (EU/ISO 68, UK YĀ½, 21.8 mm diameter). Full cross-system table below.
Circumference 68.5 mm = US 12.5
Inner circumference ā 68.5 mm Ā· diameter ā 21.8 mm Ā· EU/ISO 68
Full cross-system equivalents for this ring size:
| US | UK | EU | JP | Circ (mm) | Diam (mm) |
|---|---|---|---|---|---|
| 11 | VĀ½ | 65 | 23 | 64.6 | 20.6 |
| 11.5 | WĀ½ | 66 | 24 | 65.9 | 21.0 |
| 12 | XĀ½ | 67 | 25 | 67.2 | 21.4 |
| 12.5 | YĀ½ | 68 | 26 | 68.5 | 21.8 |
| 13 | ZĀ½ | 70 | 27 | 69.7 | 22.2 |
ā ļø UK letters vary by jeweller: half-letter conventions differ slightly between brands. The EU/ISO number equals the inner circumference in mm, so it's the most reliable cross-check. If between sizes, order the larger.
Need a different size? Use the live ring size converter to convert any value, including a mm measurement.
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