Comparative Crochet Hook Sizes

Crochet Patterns

Comparative Crochet Hook Sizes

Aluminum or Plastic
Steel
U.S.
U.K.
Int'l (mm)
U.S.
U.K.
Int'l (mm)
(Small)
14
2
14
6
.6
13
13
5 1/2
B
12
2.5
12
5
.75
C
11
3
11
4 1/2
D
10
10
4
1
E
9
3.5
9
3 1/2
F
8
4
8
3
1.25
G
7
4.5
7
2 1/2
1.5
H
6
5
6
2
1.75
I
5
5.5
5
1 1/2
J
4
6
4
1
2
K
2
7
3
1/0
2
2/0
2.5
1
3/0
3
0
(Large)
00
3.5



Sample Gauges For Classical Threads
6-cord Crochet
Cotten Size
U.S. Hook Size
Size of Swatch
5
5
3" x 3" = 33 dc x 15 rows
10
6
3" x 3" = 36 dc x 16 rows
20
7 or 8
3" x 3" = 40 dc x 16 rows
30
9
3" x 3" = 45 dc x 18 rows
40
10
3" x 3" = 47dc x 19 rows