$USD

FREE SHIPPING On Order over US $25

Jewelry Making Resource: 1.Size Info; 2.Wire & Cord; 3.Pearl; 4.Gemstone; 5.Seed Beads

1.Size Info

Inches & Millimeters Comparison

Please note that this is a close approximation. Screen resolution and monitor size will affect how you view the chart.

How Many Beads Per Inch
Bead Size	Per Inch	7"	16"	24"	32"	36"
3mm	8.25	57	132	200	265	288
4mm	6.25	43	100	150	200	225
5mm	5	35	82	124	160	180
6mm	4.25	28	67	100	132	153
7mm	3.5	24	57	85	114	126
8mm	3.25	22	50	75	100	112
10mm	2.5	18	40	60	80	90
12mm	2	15	33	50	66	72
14mm	1.75	13	29	43	56	63
16mm	1.5	11	25	38	50	54
18mm	1.25	10	23	34	45	50
20mm	1.2	8	20	29	38	43
Please note that it allows for the length of your clasp. If you use spacer beads or mix sizes, this chart may not be accurate.

Wire Gauge to Inches and Millimeters Conversion Chart
Gauge	Inches	Millimeters
10	0.102	2.59
11	0.091	2.31
12	0.081	2.06
13	0.072	1.86
14	0.064	1.63
15	0.057	1.45
16	0.052	1.32
17	0.045	1.14
18	0.04	1.02
19	0.036	0.91
20	0.032	0.81
21	0.028	0.71
22	0.025	0.64
23	0.023	0.58
24	0.02	0.51
25	0.0179	0.455
26	0.0159	0.404
27	0.0142	0.361
28	0.0126	0.32
29	0.0113	0.287
30	0.01	0.25
31	0.0089	0.226
32	0.008	0.2
33	0.0071	0.18
34	0.0063	0.16
35	0.0056	0.142
36	0.005	0.13
37	0.0045	0.114
38	0.004	0.1

Internationnal Ring Size Conversion Chart
Inside circumference		Inside diameter		US Size	UK Size	JP Size
(in)	ISO(mm)	(in)	(mm)	US Size	UK Size	JP Size
1.54	39.1	0.49	12.45	1	B	1号
1.64	41.7	0.522	13.26	2	D	2号
1.74	44.2	0.554	14.07	3	F	4号
1.84	46.8	0.586	14.88	4	H	7号
1.94	49.3	0.618	15.7	5	J 1/2	9号
1.99	50.6	0.634	16.1	5 1/2	K 1/2	10号
2.04	51.9	0.65	16.51	6	L 1/2	11号
2.07	52.5	0.658	16.71	6 1/2	M	12号
2.09	53.1	0.666	16.92	6 1/2	M 1/2	13号
2.12	53.8	0.674	17.12	6 3/4	N
2.14	54.4	0.682	17.32	7	N 1/2	14号
2.17	55.1	0.69	17.53	7 1/4	0
2.19	55.7	0.698	17.73	7 1/2	0 1/2	15号
2.22	56.3	0.706	17.93	7 3/4	P
2.24	57	0.714	18.14	8	P 1/2	16号
2.27	57.6	0.722	18.34	78 1/4	Q
2.29	58.3	0.73	18.54	8 1/2	Q 1/2	17号
2.32	58.9	0.738	18.75	8 3/4	R
2.34	59.5	0.746	18.95	9	R 1/2	18号
2.37	60.2	0.754	19.15	9 1/4	S
2.39	60.8	0.762	19.35	9 1/2	S 1/2	19号
2.42	61.4	0.77	19.56	9 3/4	T
2.44	62.1	0.778	19.76	10	T 1/2	20号
2.47	62.7	0.786	19.96	10 1/4	U	21号
2.49	63.4	0.794	20.17	10 1/2	U 1/2	22号
2.54	64.6	0.81	20.57	11	V 1/2	23号
2.65	67.2	0.842	21.39	12	X 1/2	25号
2.75	69.7	0.874	22.2	13		27号
0.906	23.01	2.85	72.3	14	Z3
※US Size applicable for US, Canada, etc. ※UK Size applicable for UK, Australia, Ireland, New Zealand,etc. ※ISO Size applicable for France,Italy,etc.