US (Briller) Europe UK & Australia Diameter (mm)
5 49 J1/2 15.7
6 52 L1/2 16.5
7 54.5 N1/2 17.3
8 57 P1/2 18.2
9 60 R1/2 19
10 62 T1/2 19.8
11 65 V1/2 20.6

 

 Unsure?

 

1. Grab a tape measure, string or strip of paper.

2. Wrap it around the finger you will wear your ring on.

3. Lay your string or paper on a flat surface and use a ruler to measure the length up to the mark. Use the chart above to match the measurements.

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