Ring 💍 Size Chart

Circumference (mm)	Diameter (mm)	US Size	Japan Size	UK Size
48	15.27	4.5	8	I 1/2
49	15.70	5	9	J 1/2
51	16.10	5.5	11	L
52	16.51	6	12	M
53	16.92	6.5	13	N
55	17.35	7	14	O
56	17.75	7.5	15	P
57	18.19	8	16	Q
58	18.53	8.5	17	Q 1/2
59	18.89	9	18	R 1/2
61	19.41	9.5	19	S 1/2
62	19.84	10	20	T 1/2
63	20.20	10.5	22	U 1/2
65	20.68	11	23	V 1/2
66	21.08	11.5	24	W 1/2
68	21.49	12	25	Y
69	21.89	12.5	26	Z
70	22.33	13	27

If you can't get an accurate measurement of your finger's circumference you can use rings that fit well at home and measure the diameter of the ring's opening for comparison!