Shopping Bag

0 item(s) in cart/ total: $0    view cart

Jewelry Size Conversion Chart

So many sizes!  How do you know what is what???  Here is some help.  It is our handy Metric, English, and Gauge (AWG) conversion chart.  If you need a 21 gauge headpin and want to know what size that is in mm or inches just take a look here.

 American Gauge (AWG) Inches (in) Millimeters (mm)
 12
0.0812.052 
 140.0641.628 
 160.0511.291 
 180.040 1.024 
 200.032 0.812 
 210.029 0.723 
 220.025 0.644 
 240.02 0.511 
 260.016 0.405 
 280.013 0.321 
 300.010 0.255 
 320.008 0.200 
 340.006 0.160 
 360.005 0.130 

Now let's say you want a 2 inch long semiprecious gemstone bead but you have no idea what size that is in millimeters(mm).  Just take a look here.  The entire beading world outside the US measures in metric so this conversion chart should help.

 Inches (in) or (")Millimeters (mm) 
 0.04
 0.08
 0.12
 0.16
 0.20
 0.24 (1/4 inch)
 0.28
 0.31
 0.35
 0.3910 
 0.4311 
 0.4712 
 0.51 (1/2 inch)13 
 0.5514 
 0.5915 
 0.6316 
 0.6717 
 0.7118 
 0.75 (3/4 inch)19 
 0.7920 
 0.8321 
 0.8722 
 0.9123 
 0.9424 
 0.98 (1 inch)25 
 1.0226 
1.0627
 1.1028 
 1.1429 
 1.1830 
 1.2231 
 1.26 (1-1/4 inch)32
 1.3033 
 1.3434 
 1.3835 
 1.4236 
 1.4637 
 1.50 (1-1/2 inch)38 
 1.5439 
 1.5740 
 1.6141 
 1.6542 
 1.7043 
 1.73 (1-3/4")44 
 1.7745 
 1.8146 
 1.8547 
 1.8948 
 1.9349 
 1.97 (2 inch)50