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Knitting Needle Sizes Chart for US and UK

Knitting needle sizes can be confusing. That’s because different countries have different ways of numbering their knitting needles. In the US, needle sizes start at 0 and increase to 50. However, in the UK, sizes start at 14 and go up to 000. Confused yet? To help you decipher the world of knitting needle sizes, refer to the charts below which compares knitting needles in the US and UK, with crochet hook sizes thrown in for good measure.

 Metric (mm) US Size UK Size Crochet
2.0 mm014
2.25 mm113B
2.5 mm1.5
2.75 mm212C
3.0 mm2.511
3.25 mm310D
3.5 mm4E
3.75 mm59F
4.0 mm68G
4.5 mm77
5.0 mm86H
5.5 mm95I
6.0 mm104J
6.5 mm10.53K
7.0 mm2
7.5 mm1
8.0 mm110L
9.0 mm1300
10.0 mm15000
12-12.75 mm17
15-16 mm19
19.0 mm35
20.0 mm36
25 mm50