Crochet Hook Sizes Conversion Chart: Metric, Japanese, UK / Canadian & US.

 

Crochet Hook Size Conversion Table
Metric (mm) Japanese UK / Canadian US
2 2/0 14
2.25 3/0 13 B/1
2.5 4/0 12
2.75 C/2
3 5/0 11
3.25 10 D/3
3.5 6/0 9 E/4
3.75 F/5
4 7/0 8 G/6
4.5 7 7
5 8/0 6 H/8
5.5 5 I/9
6 10/0 4 J/10
6.5 3 K/10 1/2
7 2
8 0 L/11
9 00 M/13
10 000 N/15