So you have come across a knitting pattern quoting ‘strange’ knitting needle sizes and need to convert them to something you understand! Hopefully this Metric, US / UK conversion chart will help.

Happy Knitting!

Metric (mm)
UK
US
2.0 mm
14 0
2.25 mm
13 1
2.5 mm
12 1
2.75 mm
12 2
3 mm
11 3
3.25 mm
10 3
3.5 mm
9 4
3.75 mm
9 5
4 mm
8 6
4.25 mm
7 6
4.5 mm
6 7
5 mm
5 8
5.5 mm
4 9
6 mm
3 10
6.5 mm
2 10 1/2
7 mm
1 10 1/2
8 mm
0 11
9 mm
00 13
10 mm
000 15
12 mm
17
15 mm
19
19 mm
35
20 mm
36
25 mm
50