INTERNATIONAL RING SIZE CONVERSION CHART

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Inside Diameter		Inside Circumference		Sizes
MM	Inches	MM	Inches	British & Australian	US & Canada	Israel & Europe
14.25	0.561	44.77	1.76	F 3/4	3 1/4	45
14.36	0.565	45.11	1.77	G	3 3/8	45
14.45	0.569	45.40	1.79	G 1/4	3 1/2	45.5
14.56	0.573	45.74	1.80	G 1/2	3 5/8	46
14.65	0.577	46.02	1.81	H	3 3/4	46
14.86	0.585	46.68	1.84	H 1/2	4	46.5
15.04	0.592	47.25	1.86	I	4 1/4	47.5
15.27	0.601	47.97	1.89	I 1/2	4 1/2	48
15.40	0.606	48.38	1.90	J	4 5/8	48.5
15.53	0.611	48.79	1.92	J 1/4	4 3/4	49
15.70	0.618	49.32	1.94	J 1/2	5	49.5
15.80	0.622	49.64	1.95	K	5 1/8	49.5
15.90	0.626	49.95	1.97	K 1/4	5 1/4	50
16.00	0.630	50.27	1.98	K 1/2	5 3/8	50
16.10	0.634	50.58	1.99	L	5 1/2	50.5
16.30	0.642	51.21	2.02	L 1/4	5 3/4	51
16.41	0.646	51.55	2.03	L 1/2	5 7/8	51.5
16.51	0.650	51.87	2.04	M	6	52
16.71	0.658	52.50	2.07	M 1/2	6 1/4	52.5
16.92	0.666	53.16	2.09	N	6 1/2	53
17.13	0.674	53.82	2.12	N 1/2	6 3/4	54
17.35	0.683	54.51	2.15	O	7	54.5
17.45	0.687	54.82	2.16	O 1/2	7 1/4	55
17.75	0.699	55.76	2.20	P	7 1/2	56
17.97	0.707	56.45	2.22	P 1/2	7 3/4	56.5
18.19	0.716	57.15	2.25	Q	8	57
18.35	0.722	57.65	2.27	Q 1/2	8 1/4	57.5
18.53	0.729	58.21	2.29	Q 3/4	8 1/2	58
18.61	0.733	58.47	2.30	R	8 5/8	58.5
18.69	0.736	58.72	2.31	R 1/4	8 3/4	58.5
18.80	0.740	59.06	2.32	R 1/2	8 7/8	59
18.89	0.748	59.34	2.35	R 3/4	9	59.5
19.10	0.752	60.00	2.36	S	9 1/8	60
19.22	0.757	60.38	2.38	S 1/4	9 1/4	60.5
19.31	0.760	60.66	2.39	S 1/2	9 3/8	60.5
19.41	0.764	60.98	2.40	S 3/4	9 1/2	61
19.51	0.768	61.29	2.41	T	9 5/8	61.5
19.62	0.772	61.64	2.43	T 1/4	9 3/4	61.5
19.84	0.781	62.33	2.45	T 1/2	10	62.5
20.02	0.788	62.89	2.48	U	10 1/4	63
20.20	0.797	63.46	2.50	U 1/2	10 1/2	63.5
20.32	0.800	63.84	2.51	V	10 5/8	64
20.44	0.805	64.21	2.53	V 1/4	10 3/4	64.5
20.68	0.814	64.97	2.56	V 1/2	11	65
20.76	0.817	65.22	2.57	W	11 1/8	65
20.85	0.821	65.50	2.58	W 1/4	11 1/4	65.5
20.94	0.824	65.78	2.59	W 1/2	11 3/8	66
21.08	0.830	66.22	2.61	W 3/4	11 1/2	66
21.18	0.834	66.54	2.62	X	11 5/8	66.5
21.24	0.836	66.73	2.63	X 1/4	11 3/4	67
21.30	0.839	66.92	2.64	X 1/2	11 7/8	67
21.49	0.846	67.51	2.66	Y	12	67.5
21.69	0.854	68.14	2.68	Y 1/2	12 1/4	68
21.89	0.862	68.77	2.71	Z	12 1/2	69
22.10	0.870	69.43	2.73	Z +1/2	12 3/4	69.5
22.33	0.879	70.15	2.76	Z+1	13	70
22.60	0.890	71.00	2.80	Z+1.5	13.5	71
22.69	0.893	71.28	2.81	Z+2	13.5	71.5
22.92	0.902	72.00	2.83	Z+2.5	14	72
23.06	0.908	72.45	2.85	Z+3	14	72.5
23.24	0.915	73.01	2.87	Z+3.5	14 1/4	73
23.47	0.924	73.73	2.90	Z+4	14 1/3	73.5
23.55	0.927	73.98	2.91	Z+4.5	14 1/2	74
23.71	0.934	74.49	2.93	Z+4.75	14 2/3	74.5
23.87	0.940	74.99	2.95	Z+5	15	75

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INTERNATIONAL RING SIZE CONVERSION CHART

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