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AtPerry's uses US Ring Sizes.

Select a ring size in one category, the rest will change to match.

USA size	Diam. inch.	Diam. mm	Circum. mm

British	French	German	Japanese	Swiss

Follow this Ring Size Chart to convert your Local Ring Size to USA Ring Size

International Ring Size Table
AtPerry's Size (US / Canada)	UK / Australia / South Africa	France	Germany / Russia / Ukraine / Asia	India / China / Japan / South America / Turkey / Israel	Italy / Spain / Netherlands / Switzerland
½	A	---	---	---	---
1	B	---	---	1	---
1 1/2	C	---	---	---	---
2	D	41 1/2	13 1/4	2	1 1/2
2 1/4	D-½	42 1/8	13 1/2	---	---
2 1/2	E	42 3/4	13 3/4	3	2 3/4
2 3/4	E-½	43 3/8	---	---	3 3/8
3	F	44	14	4	4
3 1/4	F-½	44 5/8	14 1/4	---	4 5/8
3 1/2	G	45 1/4	14 1/2	5	5 1/4
3 3/4	G-½	45 7/8	14 3/4	6	5 7/8
4	H	46 1/2	15	7	6 1/2
4 1/4	H-½	47 1/8	---	---	7 1/8
4 1/2	I	47 3/4	15 1/4	8	7 3/4
4 3/4	J	48 3/8	15 1/2	---	8 3/8
5	J-½	49	15 3/4	9	9
5 1/4	K	49 5/8	16	---	9 5/8
5 1/2	K-½	50 1/4	16 1/4	10	10 1/4
5 3/4	L	50 7/8	---	11	10 7/8
6	L-½	51 1/2	16 1/2	12	11 1/2
6 1/4	M	52 1/8	16 3/4	---	12 1/8
6 1/2	M-½	52 3/4	17	13	12 3/4
6 3/4	N	53 3/8	---	---	13 3/8
7	O	54	17 1/4	14	14
7 1/4	O-½	54 5/8	17 1/2	---	14 5/8
7 1/2	P	55 1/4	17 3/4	15	15 1/4
7 3/4	P-½	55 7/8	18	---	15 7/8
8	Q	56 1/2	---	16	16 1/2
8 1/4	Q-½	57 1/8	18 1/4	---	17 1/8
8 1/2	R	57 3/4	18 1/2	17	17 3/4
8 3/4	R-½	58 3/8	18 3/4	---	18 3/8
9	S	59	19	18	19
9 1/4	S-½	59 5/8	19 1/4	---	19 5/8
9 1/2	---	60 1/4	19 1/2	19	20 1/4
9 3/4	T	60 7/8	---	---	20 7/8
10	T-½	61 1/2	19 3/4	20	21 1/2
10 1/4	U	62 1/8	20	21	22 1/8
10 1/2	U-½	62 3/4	---	22	22 3/4
10 3/4	V	63 3/8	20 1/2	---	23 3/8
11	V-½	64	20 3/4	23	24
11 1/4	W	64 5/8	---	---	24 5/8
11 1/2	W-½	65 1/4	21	24	25 1/4
11 3/4	X	65 7/8	21 1/4	---	25 7/8
12	Y	66 1/2	21 1/2	25	26 1/2
12 1/4	Y-½	67 1/8	---	---	27 1/8
12 1/2	Z	67 3/4	21 3/4	26	27 3/4
12 3/4	Z-½	68 3/8	---	---	28 3/8
13	---	69	22	27	29