Crochet Hook Sizes Conversion Chart

Crochet Hooks

 Metric US Sizes UK Sizes
0.50 mm 18 ---
0.75 mm 14 ---
0.90 mm 13 ---
1.00 mm 12 ---
1.25 mm 10 ---
1.50 mm 8 ---
1.75 mm 6 ---
2.00 mm A0 14
2.10 mm --- ---
2.50 mm 1.5 12
3.00 mm 2.5 11
3.25 mm D3 10
3.50 mm E4 9
3.75 mm F5 ---
4.00 mm G6 8
4.50 mm 7 7
5.00 mm H8 6
5.50 mm I9 5
6.00 mm J10 4
6.50 mm K10.5 3
7.00 mm K10.75 2
8.00 mm L11 0
9.00 mm M13 00
10.00 mm N15 000
12.00 mm O17 ---
15.00 mm P19 ---