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International Ring Size Conversion Chart

Welcome to your go-to guide for finding ring sizes across different countries. We’ve gathered accurate information from trusted sources worldwide, making it simple to compare your size with those used in the US, UK/Australia, Europe, India, and Japan.

With more and more people buying jewelry online, getting the size right from the beginning is essential—especially when it comes to precious pieces like rings. This guide is designed to help you identify your exact size, so you can shop with confidence and avoid costly resizing later.

Diameter (mm)	Diameter (in)	Circumferene (mm)	Circumference (in)	US Size	India	UK/AU	EU	Japan
14.07	0.554	44.17	1.739	3.0	4	F½	44.2	4
14.27	0.562	44.81	1.764	3.25	4.5	G	44.8	5
14.48	0.570	45.45	1.789	3.5	5	G½	45.5	6
14.68	0.578	46.10	1.815	3.75	5.5	H	46.1	7
14.86	0.585	46.74	1.840	4.0	6	H½	46.8	7
15.04	0.592	47.38	1.865	4.25	6.5	I	47.4	8
15.27	0.602	48.02	1.890	4.5	7	I½	48.0	9
15.47	0.609	48.66	1.916	4.75	8	J	48.7	9
15.70	0.618	49.30	1.941	5.0	9	J½	49.3	10
15.90	0.626	49.95	1.966	5.25	9.5	K	50.0	11
16.10	0.634	50.59	1.992	5.5	10	K½	50.6	12
16.30	0.642	51.23	2.017	5.75	11	L	51.2	12
16.51	0.650	51.87	2.042	6.0	12	L½	51.9	13
16.71	0.658	52.51	2.067	6.25	12.5	M	52.5	14
16.92	0.666	53.16	2.093	6.5	13	M½	53.1	14
17.12	0.674	53.80	2.118	6.75	14	N	53.8	15
17.32	0.682	54.44	2.143	7.0	14.5	N½	54.4	15
17.53	0.690	55.08	2.169	7.25	15	O	55.1	16
17.73	0.698	55.72	2.194	7.5	16	O½	55.7	17
17.93	0.706	56.36	2.219	7.75	16.5	P	56.3	17
18.14	0.714	57.00	2.244	8.0	17	P½	57.0	18
18.34	0.722	57.65	2.270	8.25	17.5	Q	57.6	19
18.54	0.730	58.29	2.295	8.5	18	Q½	58.3	19
18.75	0.738	58.93	2.320	8.75	19	R	58.9	20
18.95	0.746	59.57	2.345	9.0	20	R½	59.5	21
19.15	0.754	60.21	2.371	9.25	20.5	S	60.2	22
19.35	0.762	60.86	2.396	9.5	21	S½	60.8	23
19.56	0.770	61.50	2.421	9.75	22	T	61.4	23
19.76	0.778	62.14	2.446	10.0	22.5	T½	62.1	24
19.96	0.786	62.78	2.472	10.25	23	U	62.7	25
20.17	0.794	63.42	2.497	10.5	24	U½	63.4	25
20.37	0.802	64.06	2.522	10.75	24.5	V	64.0	26
20.57	0.810	64.71	2.547	11.0	25	V½	64.6	27
20.78	0.818	65.35	2.573	11.25	26	W	65.3	28
20.98	0.826	65.99	2.598	11.5	26.5	W½	65.9	28
21.18	0.834	66.63	2.623	11.75	27	X	66.5	29
21.39	0.842	67.27	2.648	12.0	28	X½	67.2	30
21.59	0.850	67.91	2.674	12.25	28.5	Y	67.8	31
21.79	0.858	68.56	2.699	12.5	29	Y½	68.5	32
21.99	0.866	69.20	2.724	12.75	30	Z	69.1	32
22.20	0.874	69.84	2.749	13.0	31	Z½	69.7	33
22.40	0.882	70.48	2.775	13.25	31.5	-	70.4	34
22.60	0.890	71.12	2.800	13.5	32	-	71.0	35
22.81	0.898	71.76	2.825	13.75	33	-	71.6	35
23.01	0.906	72.41	2.850	14.0	34	-	72.3	36

Ring Size Conversion Chart Download Link : Gelson World

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