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 A/0 14
2.10 mm --- ---
2.50 mm --- 12
3.00 mm --- 11
3.25 mm D/3 10
3.50 mm E/4 9
3.75 mm F/5 ---
4.00 mm G/6 8
4.50 mm 7 7
5.00 mm H/8 6
5.50 mm I/9 5
6.00 mm J/10 4
6.50 mm K/10.5 3
7.00 mm --- 2
8.00 mm L/11 0
9.00 mm M/13 00
10.00 mm N/15 000
12.00 mm O/17 ---
15.00 mm P/19 ---