Ring Size Chart

Ring size
(circumference of finger in mm)

Inner diameter
(ring diameter in mm)

48 mm.
15.2 mm.
49 mm. 15.6 mm.
50 mm. 15.9 mm.
51 mm. 16.2 mm.
52 mm.
16.6 mm.
53 mm. 16.9 mm.
54 mm. 17.2 mm.
55 mm. 17.5 mm.
56 mm. 17.8 mm.
57 mm. 18.1 mm.
58 mm. 18.5 mm.
59 mm. 18.8 mm.
60 mm. 19.1 mm.
61 mm. 19.4 mm.
62 mm. 19.7 mm.
63 mm. 20 mm.
64 mm. 20.4 mm.
65 mm. 20.7 mm.
66 mm. 21 mm.
67 mm. 21.3 mm.
68 mm. 21.6 mm.
69 mm. 22 mm.
70 mm. 22.3 mm.