US Needle Size and Metric Equivalents
This chart compares the US and metric equivalents for knitting needle sizes
1 2mm
2 2.5mm
3 3mm
4 3.5mm
5 3.75mm
6 4mm
7 4.5mm
8 5mm
9 5.5mm
10 6mm
10 ½ 6.5mm
11 8mm
13 9mm
15 10mm
17 12mm
19 16mm
35 19mm
50 25mm