Crochet
Hook Conversion Charts
Here is a crochet hook conversion chart for Aluminum
crochet hooks. As you can see, there is a difference between hooks
from the USA, the UK, and Canada. It is also important to realize
that their may be a slight difference between hook sizes depending upon
the company you are purchasing hooks from.
|
Metric
|
USA
|
UK & Canada
|
|
2.0 mm
|
-
|
-
|
|
2.25 mm
|
-
|
14
|
|
2.5 mm
|
1 / B
|
13
|
|
2.75 mm
|
-
|
12
|
|
3.0 mm
|
2 / C
|
11
|
|
3.25 mm
|
3 / D
|
11
|
|
3.5 mm
|
4 / E
|
10
|
|
3.75 mm
|
5 / F
|
9
|
|
4.0 mm
|
-
|
-
|
|
4.25 mm
|
6 / G
|
8
|
|
4.5 mm
|
-
|
-
|
|
4.75 mm
|
7
|
7
|
|
5.0 mm
|
8 / H
|
6
|
|
5.5 mm
|
8 / I
|
5
|
|
6.0 mm
|
10 / J
|
4
|
|
6.5 mm
|
10 1/2 / K
|
3
|
|
7.0 mm
|
-
|
2
|
|
8.0 mm
|
11 / L
|
0
|
|
9.0 mm
|
13 / M
|
00
|
|
9.5 mm
|
-
|
|
|
10.0 mm
|
15 / N
|
000
|
|
11.5 mm
|
P
|
|
|
12.0 mm
|
17
|
|
|
15.75 mm
|
Q
|
|
Here is a conversion chart for Steel crochet hooks.
|
Metric
|
USA
|
UK & Canada
|
|
3.0 mm
|
00
|
-
|
|
2.5 mm
|
0
|
00
|
|
2.0 mm
|
1
|
1
|
|
1.95 mm
|
2
|
-
|
|
1.89 mm
|
3
|
-
|
|
1.75 mm
|
4
|
2
|
|
1.7 mm
|
5
|
-
|
|
1.6 mm
|
6
|
-
|
|
1.5 mm
|
7
|
2.5
|
|
1.25 mm
|
8
|
3
|
|
1.15 mm
|
9
|
-
|
|
1.0 mm
|
10
|
4
|
|
0.8 mm
|
11
|
-
|
|
0.75 mm
|
12
|
5
|
|
0.7 mm
|
13
|
-
|
|
0.6 mm
|
14
|
6
|
|
|
|
|
