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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 Craft Council of America Category Australia
1 ply Laceweight 0 2 ply
2 ply Fingering 1 3 ply
3 ply Sock 1 3 ply
4 ply Sport 2 5 ply
DK DK/Light Worsted 3 8 ply
Aran Worsted 4 10 ply
Chunky Bulky 5 12 ply
Super Chunky Super Bulky 6 14 ply
* Please note that conversions are approximate

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