Ring Sizer
RING SIZE
FINGER CIRCUMFERENCE
US EU mm inch
5 49 49.3 1.941
6 51.5 51.8 2.039
7 54 54.4 2.141
8 56.5 56.5 2.22
9 59 59.5 2.342
10 62 62.1 2.443
11 64 64.6 2.543
12 66.5 67.21 2.645