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Women’s Rings, Stacking & Statement Rings Reference Matrix

Women’s Ring Sizing & Measurement Matrix

Comprehensive reference matrix mapping women’s stacking rings, statement rings, fashion bands, and everyday fine jewelry against inner finger diameter and circumference across international sizing standards.

Women’s Rings Standard Specifications

Detailed breakdown of standardized sizing labels, inner finger diameters, and inner circumferences for women’s rings, stacking bands, and statement jewelry.

United States	Europe	United Kingdom	Italy	France	Australia	Japan	South Korea	China	Brazil	Mexico	International	Inner Diameter ( $\text{mm}$ )	Inner Diameter ( $\text{in}$ )	Circumference ( $\text{mm}$ )	Circumference ( $\text{in}$ )
3	44	F	4	44	F	4	40	No. 4	7	3	XXS	14.1	0.555	44.2	1.74
3.5	45.5	G	5.5	45.5	G	6	50	No. 5	8	3.5	XXS	14.5	0.571	45.5	1.79
4	47	H 1/2	7	47	H 1/2	7	70	No. 7	9	4	XS	14.9	0.587	46.8	1.84
4.5	48	I 1/2	8	48	I 1/2	8	80	No. 8	10	4.5	XS	15.3	0.602	48	1.89
5	49.5	J 1/2	9.5	49.5	J 1/2	9	90	No. 9	11	5	S	15.7	0.618	49.3	1.94
5.5	51	L	11	51	L	10	100	No. 10	12	5.5	S	16.1	0.634	50.6	1.99
6	52	M	12	52	M	11	110	No. 11	13	6	M	16.5	0.65	51.9	2.04
6.5	53.5	N	13.5	53.5	N	13	130	No. 13	14	6.5	M	16.9	0.665	53.1	2.09
7	54.5	O	14.5	54.5	O	14	140	No. 14	15	7	L	17.3	0.681	54.4	2.14
7.5	56	P	16	56	P	15	150	No. 15	16	7.5	L	17.7	0.697	55.7	2.19
8	57	Q	17	57	Q	16	160	No. 16	17	8	XL	18.1	0.713	57	2.24
8.5	58.5	R	18.5	58.5	R	17	170	No. 17	18	8.5	XL	18.5	0.728	58.3	2.29
9	60	S	20	60	S	18	180	No. 18	19	9	2XL	18.9	0.744	59.5	2.34
9.5	61	T	21	61	T	19	190	No. 19	20	9.5	2XL	19.4	0.764	60.8	2.39
10	62.5	U	22.5	62.5	U	20	200	No. 20	21	10	3XL	19.8	0.78	62.1	2.44
10.5	64	V	24	64	V	21	210	No. 21	22	10.5	3XL	20.2	0.795	63.4	2.5
11	65	W	25	65	W	22	220	No. 22	23	11	4XL	20.6	0.811	64.6	2.54
11.5	66.5	X	26.5	66.5	X	23	230	No. 23	24	11.5	4XL	21	0.827	65.9	2.59
12	68	Z	28	68	Z	24	240	No. 24	25	12	5XL	21.4	0.843	67.2	2.65

* Sizing can vary significantly between international brands and regional manufacturers. Use this matrix as a baseline reference for standard proportional conversions.

Interpreting Women’s Rings, Stacking Bands & Fine Jewelry Dimensions

Standardizing women’s rings requires correlating regional size labels with precise physical dimensions, including inner finger diameter and inner circumference measured in millimeters ( $\text{mm}$ ) or inches ( $\text{in}$ ). Because jewelry bands must fit precise finger circumferences, sizing spans across global standards including US/Canada, Europe, UK/Australia letter scales, France, Italy, Japan, South Korea, Brazil, and Mexico market formats.

When utilizing this matrix for ring selection or international size conversion, cross-reference your finger measurements against the listed metric and imperial specifications to ensure an ideal fit across stacking rings, statement pieces, and fashion bands.

Indexed Sizing Tiers & Dimensions

3Size

Inner Diameter: 14.1 mm (0.555 in), Circumference: 44.2 mm (1.74 in) mapping for US size 3

Symbol: 3Base Value: 14.1

3.5Size

Inner Diameter: 14.5 mm (0.571 in), Circumference: 45.5 mm (1.79 in) mapping for US size 3.5

Symbol: 3.5Base Value: 14.5

4Size

Inner Diameter: 14.9 mm (0.587 in), Circumference: 46.8 mm (1.84 in) mapping for US size 4

Symbol: 4Base Value: 14.9

4.5Size

Inner Diameter: 15.3 mm (0.602 in), Circumference: 48 mm (1.89 in) mapping for US size 4.5

Symbol: 4.5Base Value: 15.3

5Size

Inner Diameter: 15.7 mm (0.618 in), Circumference: 49.3 mm (1.94 in) mapping for US size 5

Symbol: 5Base Value: 15.7

5.5Size

Inner Diameter: 16.1 mm (0.634 in), Circumference: 50.6 mm (1.99 in) mapping for US size 5.5

Symbol: 5.5Base Value: 16.1

6Size

Inner Diameter: 16.5 mm (0.65 in), Circumference: 51.9 mm (2.04 in) mapping for US size 6

Symbol: 6Base Value: 16.5

6.5Size

Inner Diameter: 16.9 mm (0.665 in), Circumference: 53.1 mm (2.09 in) mapping for US size 6.5

Symbol: 6.5Base Value: 16.9

7Size

Inner Diameter: 17.3 mm (0.681 in), Circumference: 54.4 mm (2.14 in) mapping for US size 7

Symbol: 7Base Value: 17.3

7.5Size

Inner Diameter: 17.7 mm (0.697 in), Circumference: 55.7 mm (2.19 in) mapping for US size 7.5

Symbol: 7.5Base Value: 17.7

8Size

Inner Diameter: 18.1 mm (0.713 in), Circumference: 57 mm (2.24 in) mapping for US size 8

Symbol: 8Base Value: 18.1

8.5Size

Inner Diameter: 18.5 mm (0.728 in), Circumference: 58.3 mm (2.29 in) mapping for US size 8.5

Symbol: 8.5Base Value: 18.5

9Size

Inner Diameter: 18.9 mm (0.744 in), Circumference: 59.5 mm (2.34 in) mapping for US size 9

Symbol: 9Base Value: 18.9

9.5Size

Inner Diameter: 19.4 mm (0.764 in), Circumference: 60.8 mm (2.39 in) mapping for US size 9.5

Symbol: 9.5Base Value: 19.4

10Size

Inner Diameter: 19.8 mm (0.78 in), Circumference: 62.1 mm (2.44 in) mapping for US size 10

Symbol: 10Base Value: 19.8

10.5Size

Inner Diameter: 20.2 mm (0.795 in), Circumference: 63.4 mm (2.5 in) mapping for US size 10.5

Symbol: 10.5Base Value: 20.2

11Size

Inner Diameter: 20.6 mm (0.811 in), Circumference: 64.6 mm (2.54 in) mapping for US size 11

Symbol: 11Base Value: 20.6

11.5Size

Inner Diameter: 21 mm (0.827 in), Circumference: 65.9 mm (2.59 in) mapping for US size 11.5

Symbol: 11.5Base Value: 21

12Size

Inner Diameter: 21.4 mm (0.843 in), Circumference: 67.2 mm (2.65 in) mapping for US size 12

Symbol: 12Base Value: 21.4