Ring Size Chart

Inside diameter (mm)	Inside circumference (mm)	Ring size
14.48	45.5	G
14.88	46.8	H
15.29	48	I
15.49	48.7	J
15.9	50	K
16.31	51.2	L
16.71	52.5	M
17.12	53.8	N
17.53	55.1	O
17.93	56.3	P
18.34	57.6	Q
18.75	58.9	R
19.15	60.2	S
19.56	61.4	T
19.96	62.7	U
20.37	64	V
20.78	65.3	W
21.18	66.6	X
21.59	67.8	Y
21.79	68.5	Z