In light of our growing international sales, we are pleased to include an easy ring size conversion chart for your use below.

We highly recommend that you either measure the inner diameter of a current ring, or visit a local jeweler for an accurate ring size measurement *before* placing your order. 

This will ensure the ring arrives ready to wear or gift without requiring additional work.  We request that orders are placed using the US ring size.

 

BetterThanDiamond.com International Ring Size Chart:

Inner Diameter (mm)	Inner Circumference (mm)	US and Canada Ring Size	Australia, UK, Ireland	Japan, China
11.63	36.5	0
11.84	37.2	.25
12.04	37.8	.50	A
12.24		.75	A 1/2
12.45		1.0	B	1
12.65		1.25	B 1/2
12.85		1.50	C
13.06		1.75	C 1/2
13.26		2.00	D	2
13.46		2.25	D 1/2
13.67		2.50	E	3
13.87		2.75	E 1/2
14.07		3.00	F	4
14.27		3.25	F 1/2	5
14.48		3.50	G
14.68		3.75	G 1/2	6
14.88		4.00	H	7
15.00		4.25	H 1/2
15.29		4.50	I	8
15.49		4.75	J
15.70		5.00	J 1/2	9
15.90		5.25	K
16.10		5.50	K 1/2	10
16.31		5.75	L
16.51		6.00	L 1/2	11
16.71		6.25	M	12
16.92		6.50	M 1/2	13
17.12		6.75	N
17.32		7.00	N 1/2	14
17.53		7.25	O
17.73		7.50	O 1/2	15
17.93		7.75	P
18.14		8.00	P 1/2	16
18.34		8.25	Q
18.54		8.50	Q 1/2	17
18.75		8.75	R
18.95		9.00	R 1/2	18
19.15		9.25	S
19.35		9.50	S 1/2	19
19.56		9.75	T
19.76		10.00	T 1/2	20
19.96		10.25	U	21
20.17		10.50	U 1/2	22
20.37		10.75	V
20.57		11.00	V 1/2	23
20.78		11.25	W
20.98		11.50	W 1/2	24
21.18		11.75	X
21.39		12.00	X 1/2	25
21.59		12.25	Y
21.79		12.50	Z	26
22.00		12.75	Z 1/2
22.20		13.00		27
22.40		13.25	Z1
22.61		13.50
22.81		13.75	Z2
23.01		14.00	Z3
23.22		14.25
23.42		14.50	Z4
23.62		14.75
23.83		15.00
24.03		15.25
24.23		15.50
24.43		15.75
24.64		16.00