Conversion Charts



Needle Size Conversion
Crochet Hook Size Conversion
UK
Metric
USA
UK
Metric
USA
14
2mm
0
14
2mm
-
13
2.25mm
1
13
2.25mm
B/1
-
2.5mm
-
12
2.5mm
-
12
2.75mm
2
-
2.75mm
C/2
11
3mm
-
11
3mm
-
10
3.25mm
3
10
3.25mm
D/3
-
3.5mm
4
9
3.5mm
E/4
9
3.75mm
5
-
3.75mm
F/5
8
4mm
6
8
4mm
G/6
7
4.5mm
7
7
4.5mm
7
6
5mm
8
6
5mm
H/8
5
5.5mm
9
5
5.5mm
I/9
4
6mm
10
4
6mm
J/10
3
6.5mm
10.5
3
6.5mm
K/10½
2
7mm
-
2
7mm
-
1
7.5mm
-
0
8mm
L/11
0
8mm
11
0
9mm
M/13
0
9mm
13
0
10mm
N/15
0
10mm
15
-
11.5mm
O/16
-
12mm
17
-
16mm
Q
-
15mm
19
-
19mm
S
-
20mm
36



-
25mm
50



 

Yarn Weight Conversions
UK
USA
AUSTRALIA
1 Ply
Laceweight
2 Ply
2 Ply
Fingering
3 Ply
3 Ply
Sock
3 Ply
4 Ply
Sport
5 Ply
Double Knit / DK
DK / Light Worsted
8 Ply
Aran
Worsted
10 Ply
Chunky
Bulky
12 Ply
Super Chunky
Super Bulky
14 Ply