Ring Size Conversion Chart

Determining your ring size can be tricky without the proper tools. Use our Ring Size Conversion chart below to find your ring size in different countries.

Ring
Diameter
(mm)
USA /
Canada
United
Kingdom
France Germany Japan Switzerland
14.0 mm3F441444
14.4 mmG45¼14½6⅓
14.8 mm446½157
15.2 mm47¾15¼88
15.6 mm54915¾9
16.0 mmL50¾1610½10¾
16.5 mm6M51½16½1212¾
16.9 mmN52¾171314
17.3 mm7O5417¼1415¼
17.7 mmP55¼17¾1516½
18.2 mm8Q56¾181617¾
18.6 mm5818½1718½
19.0 mm959¼191820
19.4 mm60¾19½1921
19.8 mm1061¾202021¾
20.2 mm10½62¾20¼2222¾
20.6 mm1164¼20¾2324
21.0 mm11½66212425¾
21.4 mm12Y67¼21¼2527½
21.8 mm12½Z6821¾2628¾
22.2 mm13Z + 169222729¼
22.6 mm13½Z + 1.57122.631