Ring Size Conversion Chart

Finding your ring size can be a bit tricky, but don’t worry, we’ve got you covered. Just use our handy Ring Size Conversion chart below to figure out your ring size in different countries. It’s super helpful for making sure you get the perfect fit!

International Ring Size Conversion Chart

We’ve got you covered when it comes to finding your ring size in different countries. Our handy resource includes sizing standards from the US & Canada, United Kingdom & Australia, France & Russia, Germany, Japan and Switzerland, India, and all Asian countries. It’s a great tool to help you figure out your local ring size compared to other countries. In this Ring Size Chart we’ve gathered this information from various sources to make it easier for you.

Inside Circumference: IN	Inside Circumference: MM	US, Canada, Mexico	UK, Australia, Ireland, New Zealand, South Africa	France	Germany, Russia, Ukraine, Asia	India, China, Japan, South America, Turkey, Israel	Italy, Spain, Netherlands, Switzerland
1.74	44.2	3	F	44	14	4	4
1.77	44.8	3.25	F 1/2	44.625	14.25	—	4.625
1.79	45.5	3.5	G	45.25	14.5	5	5.25
1.82	46.1	3.75	G 1/2	45.875	14.75	6	5.875
1.84	46.8	4	H	46.5	15	7	6.5
1.87	47.4	4.25	H 1/2	47.125	15.25	—	7.125
1.89	48	4.5	I	47.75	15.5	8	7.75
1.92	48.7	4.75	J	48.375	—	—	8.375
1.94	49.3	5	J 1/2	49	15.75	9	9
1.97	50	5.25	K	49.625	16	—	9.625
1.99	50.6	5.5	K 1/2	50.25	16.25	10	10.25
2.02	51.2	5.75	L	50.875	—	11	10.875
2.04	51.9	6	L 1/2	51.5	16.5	12	11.5
2.07	52.5	6.25	M	52.125	16.75	—	12.125
2.09	53.1	6.5	M 1/2	52.75	17	13	12.75
2.12	53.8	6.75	N	53.375	—	—	13.375
2.14	54.4	7	N 1/2	54	17.25	14	14
2.17	55.1	7.25	O	54.625	17.5	—	14.625
2.19	55.7	7.5	O 1/2	55.25	17.75	15	15.25
2.22	56.3	7.75	P	55.875	—	—	15.875
2.24	57	8	P 1/2	56.5	18	16	16.5
2.27	57.6	8.25	Q	57.125	18.25	—	7.125
2.29	58.3	8.5	Q 1/2	57.75	18.5	17	17.75
2.32	58.9	8.75	R	58.375	18.75	—	18.375
2.34	59.5	9	R 1/2	59	19	18	19
2.37	60.2	9.25	S	59.625	19.25	—	19.625
2.39	60.8	9.5	S 1/2	60.25	19.5	19	20.25
2.42	61.4	9.75	T	60.875	19.75	—	20.875
2.44	62.1	10	T 1/2	61.5	20	20	21.25
2.47	62.7	10.25	U	62.125	20.25	21	22.125
2.49	63.4	10.5	U 1/2	62.75	20.5	22	22.75
2.52	64	10.75	V	63.375	—	—	23.375
2.54	64.6	11	V 1/2	64	20.75	23	24
2.57	65.3	11.25	W	64.625	—	—	24.625
2.59	65.9	11.5	W 1/2	65.25	21	24	25.25
2.62	66.6	11.75	X	65.875	—	—	25.875
2.65	67.2	12	X 1/2	66.5	21.25	25	26.5
2.68	68.1	12.25	Y	67.125	21.5	—	27.125
2.71	68.5	12.5	Z	67.75	21.75	26	27.75
2.72	69.1	12.75	Z 1/2	68.375	—	—	28.375
2.75	69.7	13	—	69	22	27	29

INTERNATIONAL RING SIZE CONVERSION CHART

International Ring Size Chart

Inside Diameter		Inside Circumference		Sizes
MM	Inches	MM	Inches	British & Australian	US & Canada	French & Russian	German	Japanese	Swiss
9.91	0.390	31.13	1.22	–	0000	–	–	–	–
10.72	0.442	33.68	1.39	–	00	–	–	–	–
11.53	0.454	36.22	1.43	–	0	–	–	–	–
11.95	0.474	37.54	1.49	A	1/2	–	–	–	–
12.18	0.482	38.26	1.51	A 1/2	3/4	–	–	–	–
12.37	0.487	38.86	1.53	B	1	–	–	1	–
12.60	0.496	39.58	1.56	B 1/2	1 1/4	–	–	–	–
12.78	0.503	40.15	1.58	C	1 1/2	–	–	–	–
13.00	0.512	40.84	1.61	C 1/2	1 3/4	–	–	–	–
13.21	0.520	41.50	1.63	D	2	41 1/2	13 1/2	2	1 1/2
13.41	0.528	42.13	1.66	D 1/2	2 1/4	–	–	–	–
13.61	0.536	42.76	1.68	E	2 1/2	42 3/4	13 3/4	3	2 3/4
13.83	0.544	43.45	1.71	E 1/2	2 3/4	–	–	–	–
14.05	0.553	44.14	1.74	F	3	44	14	4	4
14.15	0.557	44.45	1.75	F 1/2	3 1/8	–	–	–	–
14.25	0.561	44.77	1.76	F 3/4	3 1/4	–	–	–	–
14.36	0.565	45.11	1.77	G	3 3/8	45 1/4	–	5	5 1/4
14.45	0.569	45.40	1.79	G 1/4	3 1/2	–	14 1/2	–	–
14.56	0.573	45.74	1.80	G 1/2	3 5/8	–	–	6	–
14.65	0.577	46.02	1.81	H	3 3/4	46 1/2	–	–	6 1/2
14.86	0.585	46.68	1.84	H 1/2	4	–	15	7	–
15.04	0.592	47.25	1.86	I	4 1/4	47 3/4	–	–	7 3/4
15.27	0.601	47.97	1.89	I 1/2	4 1/2	–	15 1/4	8	–
15.40	0.606	48.38	1.90	J	4 5/8	49	15 1/2	–	9
15.53	0.611	48.79	1.92	J 1/4	4 3/4	–	–	–	–
15.70	0.618	49.32	1.94	J 1/2	5	–	15 3/4	9	–
15.80	0.622	49.64	1.95	K	5 1/8	50	–	–	10
15.90	0.626	49.95	1.97	K 1/4	5 1/4	–	–	–	–
16.00	0.630	50.27	1.98	K 1/2	5 3/8	–	–	10	–
16.10	0.634	50.58	1.99	L	5 1/2	51 3/4	16	–	11 3/4
16.30	0.642	51.21	2.02	L 1/4	5 3/4	–	–	–	–
16.41	0.646	51.55	2.03	L 1/2	5 7/8	–	–	–	–
16.51	0.650	51.87	2.04	M	6	52 3/4	16 1/2	12	12 3/4
16.71	0.658	52.50	2.07	M 1/2	6 1/4	–	–	–	–
16.92	0.666	53.16	2.09	N	6 1/2	54	17	13	14
17.13	0.674	53.82	2.12	N 1/2	6 3/4	–	–	–	–
17.35	0.683	54.51	2.15	O	7	55 1/4	17 1/4	14	15 1/4
17.45	0.687	54.82	2.16	O 1/2	7 1/4	–	–	–	–
17.75	0.699	55.76	2.20	P	7 1/2	56 1/2	17 3/4	15	16 1/2
17.97	0.707	56.45	2.22	P 1/2	7 3/4	–	–	–	–
18.19	0.716	57.15	2.25	Q	8	57 3/4	18	16	17 3/4
18.35	0.722	57.65	2.27	Q 1/2	8 1/4	–	–	–	–
18.53	0.729	58.21	2.29	Q 3/4	8 1/2	–	18 1/2	17	–
18.61	0.733	58.47	2.30	R	8 5/8	59	–	–	19
18.69	0.736	58.72	2.31	R 1/4	8 3/4	–	–	–	–
18.80	0.740	59.06	2.32	R 1/2	8 7/8	–	–	–	–
18.89	0.748	59.34	2.35	R 3/4	9	–	19	18	–
19.10	0.752	60.00	2.36	S	9 1/8	60 1/4	–	–	20 1/4
19.22	0.757	60.38	2.38	S 1/4	9 1/4	–	–	–	–
19.31	0.760	60.66	2.39	S 1/2	9 3/8	–	–	–	–
19.41	0.764	60.98	2.40	S 3/4	9 1/2	–	19 1/2	19	–
19.51	0.768	61.29	2.41	T	9 5/8	61 1/2	–	–	21 1/2
19.62	0.772	61.64	2.43	T 1/4	9 3/4	–	–	–	–
19.84	0.781	62.33	2.45	T 1/2	10	–	20	20	–
20.02	0.788	62.89	2.48	U	10 1/4	62 3/4	–	21	22 3/4
20.20	0.797	63.46	2.50	U 1/2	10 1/2	–	20 1/4	22	–
20.32	0.800	63.84	2.51	V	10 5/8	63	–	–	23 3/4
20.44	0.805	64.21	2.53	V 1/4	10 3/4	–	–	–	–
20.68	0.814	64.97	2.56	V 1/2	11	–	20 3/4	23	–
20.76	0.817	65.22	2.57	W	11 1/8	65	–	–	25
20.85	0.821	65.50	2.58	W 1/4	11 1/4	–	–	–	–
20.94	0.824	65.78	2.59	W 1/2	11 3/8	–	–	–	–
21.08	0.830	66.22	2.61	W 3/4	11 1/2	–	21	24	–
21.18	0.834	66.54	2.62	X	11 5/8	66 1/4	–	–	26 1/4
21.24	0.836	66.73	2.63	X 1/4	11 3/4	–	–	–	–
21.30	0.839	66.92	2.64	X 1/2	11 7/8	–	–	–	–
21.49	0.846	67.51	2.66	Y	12	67 1/2	21 1/4	25	27 1/2
21.69	0.854	68.14	2.68	Y 1/2	12 1/4	–	–	–	–
21.89	0.862	68.77	2.71	Z	12 1/2	68 3/4	21 3/4	26	28 3/4
22.10	0.870	69.43	2.73	Z +1/2	12 3/4	–	–	–	–
22.33	0.879	70.15	2.76	Z+1	13	–	22	27	–
22.60	0.890	71.00	2.80	Z+1.5	13.5	–	–	–	–
22.69	0.893	71.28	2.81	Z+2	–	–	–	–	–
22.92	0.902	72.00	2.83	Z+2.5	–	–	–	–	–
23.06	0.908	72.45	2.85	Z+3	–	–	–	–	–
23.24	0.915	73.01	2.87	Z+3.5	–	–	–	–	–
23.47	0.924	73.73	2.90	Z+4	–	–	–	–	–
23.55	0.927	73.98	2.91	Z+4.5	–	–	–	–	–
23.87	0.940	74.99	2.95	Z+5	–	–	–	–	–
24.27	0.956	76.25	3.00	Z+6	–	–	–	–	–

INTERNATIONAL RING SIZE CHART

Ring Diameter (MM)	USA/Canada	United Kingdom	France	Germany	Japan	Switzerland
14.0 mm.	3	F	44	14	4	4
14.4 mm.	3½	G	45¼	14½	5½	6⅓
14.8 mm.	4	H½	46½	15	7	6½
15.2 mm.	4½	I½	47¾	15¼	8	8
15.6 mm.	5	J½	49	15¾	9	9½
16.0 mm.	5½	L	50¾	16	10½	10¾
16.5 mm.	6	M	51½	16½	12	12¾
16.9 mm.	6½	N	52¾	17	13	14
17.3 mm.	7	O	54	17¼	14	15¼
17.7 mm.	7½	P	55¼	17¾	15	16½
18.2 mm.	8	Q	56¾	18	16	17¾
18.6 mm.	8½	Q½	58	18½	17	18½
19.0 mm.	9	R½	59¼	19	18	20
19.4 mm.	9½	S½	60¾	19½	19	21
19.8 mm.	10	T½	61¾	20	20	21¾
20.2 mm.	10½	U½	62¾	20¼	22	22¾
20.6 mm.	11	V½	64¼	20¾	23	24
21.0 mm.	11½	W½	66	21	24	25¾
21.4 mm.	12	Y	67¼	21¼	25	27½
21.8 mm.	12½	Z	68	21¾	26	28¾
22.2 mm.	13	Z + 1	69	22	27	29¼
22.6 mm.	13½	Z + 1.5	71	22.6	–	31

Conversion ring size chart