Sizing Conversions

Milimetres	Inches
1.5mm	1/16 in.
3mm	1/8 in.
6mm	1/4 in
9mm	3/8 in
12mm	1/2 in
15mm	5/8 in
18.5mm	3/4 in
22mm	7/8 in
25mm	1 in

 

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	5.00	35	82	124	160	180
6mm	4.25	28	67	100	132	153
7mm	3.50	24	57	85	114	126
8mm	3.25	22	50	75	100	112
10mm	2.50	18	40	60	80	90
12mm	2.00	15	33	50	66	72
14mm	1.75	13	29	43	56	63
16mm	1.50	11	25	38	50	54
18mm	1.25	10	23	34	45	50
20mm	1.20	8	20	29	38	43

 

Please note that the above is an approximation and should be double-checked prior to purchasing :-)