ring size conversion chart


	About Us View Our Rings Custom Engraving Frequently Asked Questions About Tungsten Demo Site Map Ring Size Conversion Chart Upcoming Events Contact Us

US Size	British	French	German	Japanese	Inside diameter in inches
0000	*	*	*	*	.390
00	*	*	*	*	.422
0	*	*	*	*	.454
1/2	A	*	*	*	.474
3/4	A 1/2	*	*	*	.482
1	B	*	*	1	.487
1 1/4	B 1/2	*	*	*	*
1 1/2	C	*	*	*	.503
1 3/4	C 1/2	*	*	*	*
2	D	41 1/2	13 1/2	2	.520
2 1/4	D 1/2	*	*	*	*
2 1/2	E	42 3/4	13 3/4	3	.536
2 3/4	E 1/2	*	*	*	*
3	F	44	14	4	.553
3 1/8	F 1/2	*	*	*	*
3 1/4	*	*	*	*	*
3 3/8	G	45 1/4	*	5	*
3 1/2	*	*	14 1/2	*	.569
3 5/8	G 1/2	*	*	6	*
3 3/4	H	46 1/2	*	*	*
4	H 1/2	*	15	7	.585
4 1/4	I	47 3/4	*	*	*
4 1/2	I 1/2	*	15 1/4	8	.601
4 5/8	J	49	15 1/2	*	*
4 3/4	*	*	*	*	*
5	J 1/2	*	15 3/4	9	.618
5 1/8	K	50	*	*	*
5 1/4	*	*	*	*	*
5 3/8	K 1/2	*	*	10	*
5 1/2	L	51 3/4	16	*	.634
5 3/4	*	*	*	*	*
5 7/8	L 1/2	*	*	*	*
6	M	52 3/4	16 1/2	12	.650
6 1/4	M 1/2	*	*	*	*
6 1/2	N	54	17	13	.666
7	O	55 1/4	17 1/4	14	.683
7 1/4	O 1/2	*	*	*	*
7 1/2	P	56 1/2	17 3/4	15	.699
7 3/4	P 1/2	*	*	*	*
8	Q	57 3/4	18	16	.716
8 1/4	Q 1/2	*	*	*	*
8 1/2			18 1/2	17	.732
8 5/8	R	59	*	*	*
8 3/4	*	*	*	*	*
8 7/8	R 1/2	*	*	*	*
9	*	*	19	18	.748
9 1/8	S	60 1/4	*	*	*
9 1/4	*	*	*	*	*
9 3/8	S 1/2	*	*	*	*
9 1/2	*	*	19 1/2	19	.764
9 5/8	T	61 1/2	*	*	*
9 3/4	*	*	*	*	*
10	T 1/2	*	20	20	.781
10 1/4	U	62 3/4	*	21	*
10 1/2	U 1/2	*	20 1/4	22	.797
10 5/8	V	63	*	*	*
10 3/4	*	*	*	*	*
11	V 1/2	*	20 3/4	23	.814
11 1/8	W	65	*	*	*
11 1/4	*	*	*	*	*
11 3/8	W 1/2	*	*	*	*
11 1/2	*	*	21	24	.825
11 5/8	X	66 1/4	*	*	*
11 3/4	*	*	*	*	*
11 7/8	X 1/2	*	*	*	*
12	Y	67 1/2	21 1/4	25	.846
12 1/4	Y 1/2	*	*	*	*
12 1/2	Z	68 3/4	21 3/4	26	.862
12 3/4	Z 1/2	*	*	*	*
13	*	*	22	27	.879
13 1/4	*	*	*	*	*
13 1/2	Z+2	*	*	30.2	.890
13 3/4	*	*	*	*	*
14	Z+3	*	*	31.4	.906
14 1/4	*	*	*	*	*
14 1/2	Z+4	*	*	32.7	.922
14 3/4	*	*	*	*	*
15	Z+5	*	*	33.9	.938
15 1/4	*	*	*	*	*
15 1/2	Z+6	*	*	35.2	.954
15 3/4	*	*	*	*	*
16	Z+7	*	*	36.4	.970
16 1/4	*	*	*	*	*
16 1/2	Z+8	*	*	37.6	.986
16 3/4	*	*	*	*	*
17	Z+9	*	*	38.9	1.002