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Ring Size Guide

Use this comprehensive chart to find your perfect ring size across different measurement systems.

How to Measure Your Ring Size

Follow these simple steps to find your ring size at home.

Wrap a piece of string or paper around your finger.
Mark the point where the ends meet.
Measure the length in millimeters.
Find your size in the chart below using the circumference measurement.

Pro tip: Measure your finger at the end of the day when your fingers are at their largest. Avoid measuring when your hands are cold as fingers tend to be smaller.

International Ring Size Conversion Chart

Find your ring size across USA, Britain, Europe, and Japan measurement systems.

USA	Diameter (mm)	Circumference (mm)	Diameter (in)	Circumference (in)	Britain	Europe	Japan
0	11.54	36.25	0.454	1.427	-	-	-
-	11.9	37.38	0.469	1.472	A	-	-
-	12	37.7	0.472	1.484	-	-	0
-	12.1	38.01	0.476	1.496	A1/2	-	-
-	12.3	38.64	0.484	1.521	B	-	-
1	12.37	38.86	0.487	1.53	-	-	-
-	12.5	39.27	0.492	1.546	B1/2	-	-
1-1/4	12.58	39.52	0.495	1.556	-	-	-
-	12.7	39.9	0.5	1.571	C	-	-
1-1/2	12.78	40.15	0.503	1.581	-	0.15	-
-	12.9	40.53	0.508	1.596	C1/2	0.53	-
1-3/4	13	40.84	0.512	1.608	-	0.84	1
-	13.05	41	0.514	1.614	-	1	-
-	13.1	41.15	0.516	1.62	D	1.15	-
2	13.21	41.5	0.52	1.634	-	1.5	-

Showing 1-15 of 176 results

Ring Size Chart