Ring Size Conversion Chart

Indian Size US Size Diameter (mm) Circumference (mm)
6 3 14.1 mm 44.2 mm
7 4 14.9 mm 46.8 mm
8 4.5 15.3 mm 48.0 mm
9 5 15.7 mm 49.3 mm
10 5.5 16.1 mm 50.6 mm
11 6 16.5 mm 51.9 mm
12 6.5 16.9 mm 53.1 mm
13 7 17.3 mm 54.4 mm
14 7.5 17.7 mm 55.7 mm
15 8 18.1 mm 57.0 mm
16 8.5 18.5 mm 58.3 mm
17 9 18.9 mm 59.5 mm
18 9.5 19.4 mm 60.8 mm
19 10 19.8 mm 62.1 mm
20 10.5 20.2 mm 63.4 mm
21 11 20.6 mm 64.6 mm
22 11.5 21.0 mm 65.9 mm
23 12 21.4 mm 67.2 mm