Crochet Hook Sizes and Knitting Needle Diameters

Crochet Hook Sizes and Knitting Needle Diameters
Metric diameter Knitting needle diameter Crochet hook size
2.25 mm 1 B-1
2.75 mm 2 C-2
3.25 mm 3 D-3
3.5 mm 4 E-4
3.75 mm 5 F-5
4 mm 6 G-6
4.5 mm 7 7
5 mm 8 H-8
5.5 mm 9 I-9
6 mm 10 J-10
6.5 mm 10.5 K-10.5
8 mm 11 L-11
9 mm 13 M/N-13
            10 mm 15 N/P-15
  12.75 mm 17
15 mm 19 P/Q
16 mm Q
19 mm 35 S
25 mm 50

Newsletter