Needle & Yarn Conversions

Knitting Needles

US Metric Old UK
0 2mm 14
1 2.25mm 13
2 2.75mm 12
3mm 11
3 3.25mm 10
4 3.5mm
5 3.75mm 9
6 4mm 8
7 4.5mm 7
8 5mm 6
9 5.5mm 5
10 6mm 4
10½ 6.5mm 3
7mm 2
11 8mm 1
13 9mm 0
15 10mm

Yarn Types

Australia/UK US
1 ply lace weight
2 ply, 3ply baby, fingering
4 ply sport weight
8 ply, double knit, dk worsted weight
10 ply, Aran fisherman or medium
12 ply, Chunky bulky

My thanks to The Knitting Site for providing the above information.