Knitting Needle Sizes for US, UK, European and Older US Needles

Knitting Needle Size Chart

Knitting

Convert your US needles to metric sizes or vice versa. This knitting needle size chart covers the size equivalents for US, UK, European and an Older US system of needle sizing. The “Old” US needles are referenced from a Boye Needle Gauge chart noted in a 1942 publication. Because the metric measurements of UK sizes are different, it may help to know where you pattern originated. Blank entries indicate that there is no data available for that particular size and measurement.

US UK US / UK Metric European Metric Older US system
8/0 24 .5 mm .5 mm  
6/0 22 .75 mm .75 mm  
  20   .875 mm  
5/0 19 1.0 mm 1.0 mm 18 (steel dpn)
      1.125 mm 17 (steel dpn)
4/0 18 1.25 mm 1.25 mm 16 (steel dpn)
0 17 1.5 mm 1.5 mm 15 (steel dpn)
  16   1.625 mm  
0 15 1.75 mm 1.75 mm 14 (steel dpn)
0 14 2 mm 2 mm 0 (standard needles) 13 (steel dpn)
1   2.25 mm 2.25 mm 12 (steel dpn)
1 13 2.5 mm 2.5 mm 1 (standard needles)
2 12 2.75 mm 2.75 mm 2 (standard needles) 11 (steel dpn)
2 11 3 mm 3 mm 3 (standard needles) 10 (steel dpn)
3 10 3.25 mm 3.5 mm  
4   3.5 mm 3.5 mm 4 (standard needles) 9 (steel dpn)
5 9 3.75 mm 3.75 mm 5 (standard needles) 8 (steel dpn)
6 8 4 mm 4 mm  
    4.25 mm 4.25 mm 6 (standard needles)
7 7 4.5 mm 4.5 mm  
    4.75 mm 4.75 mm 7 (standard needles)
8 6 5 mm 5 mm 8 (standard needles)
    5.25 mm 5.25 mm 9 (standard needles)
9 5 5.5 mm 5.5 mm  
    5.75 mm 5.75 mm 10 (standard needles)
10 4 6 mm 6 mm  
10 1/2 3 6.5 mm 6.5 mm 10 1/2 (standard needles)
  2 7 mm 7 mm  
  1 7.5 mm 7.5 mm  
11 0 8 mm 8 mm  
13 0 9 mm 9 mm  
15 0 10 mm 10 mm  
17     12.5 mm  
18     14 mm  
19     15.5 mm  
35     19 mm  
50     25 mm  

Remember to take a look at the CyberSeams Knitting Patterns and put those needles to good use!

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