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67.2 mm Ring Size

A ring with an inner circumference of 67.2 mm measures US 12 (EU/ISO 67, UK X½, 21.4 mm diameter). Full cross-system table below.

Circumference 67.2 mm = US 12
Inner circumference ā‰ˆ 67.2 mm Ā· diameter ā‰ˆ 21.4 mm Ā· EU/ISO 67

Full cross-system equivalents for this ring size:

USUKEUJPCirc (mm)Diam (mm)
10.5U½632263.420.2
11V½652364.620.6
11.5W½662465.921.0
12X½672567.221.4
12.5Y½682668.521.8
13Z½702769.722.2
āš 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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