crochet hooks

Five-inch long steel crochet hooks are sized from number 00, the largest, to number 15, the smallest, which is made for use with #250 thread. Steel hooks are usually used with cotton.

Bone hooks are 4½ or 5 inches long and made in sizes 1 through 6.

In all other hooks, “1” or “A” is the smallest size, and manufacturers use a variety of systems. Letter sizes run from A (thinnest) to S, the thickest. The numbered sizes run to 16. Plastic and aluminum hooks are sized in various ways. Wooden hooks are 9" or 10" long, and come in sizes from 7 through 16.

Afghan hooks are distinguished by a lack of a flat finger grip.

Crochet Hook Sizes
Steel Crochet hook Bamboo Plastic Millimeters
  1.25
  1.5
00   2
0 4  
1 B-1, 3 2.25
C 2.5
2 C-2, 2 2.75
    D 3
3 D-3, 1 D-3 3.25
4 , 0 E-4 E-4 E  3.5
5 F-5, 00 F-5 3.75
6 , F F-5 G-6 F 4
7 G, 7 G-6 G 4.5
8 H-8 H-8 H 5
9 I-9 I-9 I 5.5
10 J-10 J-10 J 6
10½ K-10½ K-10½ K 6.5
    7
  K 7.5
11 L-11 8
13/14 M/N-13 N-13 9
15 N/P-15 P-15 10
16    
17   12.75
18    
19 P/Q 15
Q-19 15.75
P 16
35 S S-35 19
50   25
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