Ring Size Reference Chart

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Continental Ring Size Reference Chart

numbers	Circumference (mm)	Diameter (mm)	numbers	Circumference (mm)	Diameter (mm)
#4	44	14	#16	56	17.8
#5	45	14.3	#17	57	18.2
#6	46	14.6	#18	58	18.5
#7	47	15	#19	59	18.8
#8	48	15.3	#20	60	19.1
#9	49	15.6	#21	61	19.4
#10	50	15.9	#22	62	19.7
#11	51	16.2	#23	63	20.1
#12	52	16.6	#24	64	20.4
#13	53	16.9	#25	65	20.4
#14	54	17.2	#26	66	20.7
#15	55	17.5

Hong Kong Version Ring Size Reference Chart

numbers	Circumference (mm)	Diameter (mm)	numbers	Circumference (mm)	Diameter (mm)
#7	14.3	46	#15	17.3	57
#7.5	14.5	47	#16	17.5	58
#8	14.8	48	#17	17.8	59
#8.5	15	49	#18	18.2	60
#9	15.2	50	#19	18.6	61
#10	15.4	51	#20	19	62
#11	15.5	52	#21	19.2	63
#11.5	15.8	53	#22	19.8	64
#12	16.2	54	#23	20	65
#13	16.5	55	#24	20.4	66
#14	16.8	56	#25	20.8	67

International Ring Size Reference Chart

lengths		nations
round	calibre	sino	Japanese	United States of America	United Kingdom of Great Britain and Northern Ireland	Switzerland	German	French
49.3	15.7	9	9	5	J1/2	9	15.75	49
51.8	16.5	12	12	6	L1/2	11.5	16.5	51.5
54.4	17.3	14	14	7	0	14	17.25	54
56.5	18.1	16	16	8	Q	16.5	18	56.5
59.5	18.9	18	18	9	S	19	19	59
62.1	19.8	20	20	10	T1/2	21.5	20	61.5
64.6	20	23	23	11	V1/2	24	20.75	64
67.2	21.4	25	25	12	Y	27.5	21.25	66.5

About finger measurement methods:

1. How to Measure Finger Circumference:

(1) Prepare a strip of paper or a non-stretchy string, a ballpoint pen, and a ruler.

(2) Wrap the string or strip of paper around the base of the finger where you plan to wear the ring, and mark the point where the ends meet with a pen.

(3) Unroll the string or strip of paper and use a ruler to measure the distance from one end to the mark, which is the circumference of your finger.

(4) Refer to the "Circumference" column in the table above to find the ring size that best fits you.

2. How to Measure Finger Diameter

(1) Prepare a ruler.

(2) Use the ruler to directly measure the width of the base of the finger where you want to wear the ring.

(3) Look up the corresponding ring size in the "Diameter" column of the table above.

3. The data listed in this tool is for reference only; please try the ring on to determine the actual fit.