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Needle Size & Yarn Weight Information

Needle Size Conversion Chart
Millimeter range US Knitting needle size UK Knitting needle size US Crochet hook size (letter) US Crochet hook size UK Crochet hook size
.4 mm       16  
.5 mm       15  
.6 mm       14 6
.75 mm       13  
.70 mm       12 5
.8 mm       11  
1 mm       10 4
1.15 mm       9  
1.25 mm       8 3
1.50 mm       7 2.5
1.6 mm       6  
1.7 mm       5  
1.75 mm       4 2
1.85 mm       3  
1.95 mm       2  
2.00 mm 0 14   1 1
2.25 mm 1 13 B 0 0
2.5 mm   12      
2.75 mm 2 12 C 2  
3.00 mm   11      
3.25 mm 3 10 D 3  
3.5 mm 4   E 4  
3.75 mm 5 9 F 5  
4.00 mm 6 8 G 6  
4.25 mm          
4.5 mm 7 7   7  
5.00 mm 8 6 H 8  
5.5 mm 9 5 I 9  
6.00 mm 10 4 J 10  
6.5 mm 10.5 3 K 10.5  
7.00 mm   2      
7.5 mm   1      
8.00 mm 11 0 L 11  
9.00 mm 13   M/N 13  
10.00 mm 15   N/P 15  
12.00 mm          
12.75 mm 17        
15 mm 19   P/Q    
16 mm     Q    
19 mm 35   S    
20 mm 36        
25 mm 50        
* Please note that conversions are approximate
Yarn Weight Conversion Chart
UK USA Australia
1 ply Laceweight 2 ply
2 ply Fingering 3 ply
3 ply Sock 3 ply
4 ply Sport 5 ply
DK DK/Light Worsted 8 ply
Aran Worsted 10 ply
Chunky Bulky 12 ply
Super Chunky Super Bulky 14 ply
* Please note that conversions are approximate

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