Size Guide

For clarity, we have divided our sizing conventions into charts as follows:

A gauge is used to measure the thickness of the wire element in jewelry. When it comes to body piercing jewelry, the gauge determines where the jewelry will be placed at the piercing site.

The size of the ball in each jewelry item.

The shortest distance between two ends of the piece, without factoring in any attachments such as balls.

The inside diameter of the ring in each jewelry item

Gauge

A gauge is a measure of the thickness of the wire element of a piece of jewelry. In body jewelry, it refers to the point at which the jewelry will rest in the piercing site.

Ball size

The size of the ball in each jewelry item.

Length

The shortest distance between 2 ends of the piece – not including any attachments like balls.

Rings size/diameter

The inside diameter of the ring in each jewelry item

Gauge conversion table

Metric	Gauges
0.6 mm	22 ga
0.8 mm	20 ga
1.0 mm	18 ga
1.2 mm	16 ga
1.6 mm	14 ga
2.0 mm	12 ga
2.5 mm	10 ga
3.2 mm	8 ga
4.0 mm	6 ga
5.0 mm	4 ga
6.0 mm	2 ga
8.0 mm	0 ga
10.0 mm	00 ga

Ball size conversion table

Metric	Inches(fraction)	Inches(decimal)
2.0 mm	5/64″	0.8
2.5 mm	3/32″	0.99
3.0 mm	1/8″	0.19
4.0mm	5/32″	0.16
5.0 mm	3/16″	0.2
6.0 mm	15/64″	0.24
8.0 mm	5/16″	0.32
10.0 mm	3/8″	0.29
12.0 mm	15/32″	0.47
12.7 mm	1/2″	0.5
15.0 mm	19/32″	0.59

Length conversion table

Metric	Inches(fraction)	Inches(decimal)
4.5 mm	3/16″	0.18
6.0 mm	7/32″	0.24
7.0 mm	9/32″	0.28
8.0 mm	5/16″	0.31
9.0 mm	11/32″	0.35
10.0 mm	13/32″	0.39
11.2 mm	7/16″	0.44
12.0 mm	15/32″	0.47
12.7 mm	1/2″	0.5
14.0 mm	9/16″	0.55
15.0 mm	19/32″	0.59
16.0 mm	5/8″	0.63
18.0 mm	11/16″	0.71
19.0 mm	3/4″	0.75
20.0 mm	25/32″	0.79
22.0 mm	7/8″	0.87
24.0 mm	15/16″	0.94
25.0 mm	1″	0.98
26.0 mm	1.1/32″	1
29.0 mm	1.5/326″	1.1
30.0 mm	1.3/16″	1.2
32.0 mm	1.9/32″	1.3
34.0 mm	1.11/32″	1.4
35.0 mm	1.13/32″	1.4
38.0 mm	1.1/2″	1.5
40.0 mm	1.19/32″	1.6
44.0 mm	1.25/32″	1.7
50.0 mm	2″	2

Rings size conversion table

Diameter	USA & Canada	Franch EU	UK & Australia	Japan	Switzerland
13 mm	1¾	41	C½	2	1
13.26 mm	2	41.7	D		1.75
13.5 mm	2¼	42.3	D½	3	2.25
13.67 mm	2½	42.9	E		3
13.87 mm	2¾	43.6	E½	4	3.5
14 mm	3	44.2	F	5	4.25
14.27 mm	3¼	44.8	F½		4.75
14.5 mm	3½	45.5	G	6	5.5
14.68 mm	3¾	46.1	G½	7	6
14.88 mm	4	46.8	H		6.75
15 mm	4¼	47.4	H½	8	7.5
15.29 mm	4½	48	I		8
15.5 mm	4¾	48.7	J	9	8.75
15.7 mm	5	49.3	J½		9.25
15.9 mm	5¼	50	K	10	10
16 mm	5½	50.6	K½		10.5
16.31 mm	5¾	51.2	L	11	11.25
16.5 mm	6	51.9	L½	12	11.75
16.71 mm	6¼	52.5	M	13	12.5
17 mm	6½	53.1	M½		13.25
17.12 mm	6¾	53.8	N	14	13.75
17.32 mm	7	54.4	N½		14.5
17.5 mm	7¼	55.1	O	15	15
17.73 mm	7½	55.7	O½		15.75
18 mm	7¾	56.3	P	16	16.25
18.14 mm	8	57	P½		17
18.34 mm	8¼	57.6	Q	17	17.5
18.5 mm	8½	58.3	Q½		18.25
18.75 mm	8¾	58.9	R	18	19
19 mm	9	59.5	R½		19.5
19.15 mm	9¼	60.2	S	19	20.25
19.35 mm	9½	60.8	S½		20.75
19.5 mm	9¾	61.4	T	20	21.5
19.76 mm	10	62.1	T½	21	22
20 mm	10¼	62.7	U	22	22.75
20.17 mm	10½	63.4	U½		23.25
20.37 mm	10¾	64	V	23	24
20.5 mm	11	64.6	V½		24.75
20.78 mm	11¼	65.3	W	24	25.25
21 mm	11½	65.9	W½		26
21.18 mm	11¾	66.6	X	25	26.5
21.39 mm	12	67.2	X½		27.25
21.5 mm	12¼	67.8	Y	26	27.75
21.79 mm	12½	68.5	Z		28.5
22 mm	12¾	69.1	Z½	27	29
22.2 mm	13	69.7			29.75
22.5 mm	13¼	70.4	Z1		30.5
22.61 mm	13½	71			31
22.81 mm	13¾	71.7	Z2		31.75
23 mm	14	72.3	Z3		32.25
23.22 mm	14¼	72.9			33
23.5 mm	14½	73.6	Z4		33.5
23.62 mm	14¾	74.2			34.25
23.83 mm	15	74.8			34.75
24 mm	15¼	75.5			35.5
24.23 mm	15½	76.1			36.25
24.5 mm	15¾	76.8			36.75
24.64 mm	16	77.4			37.5