Knitting Needle size conversion chart

Here's a handy knitting needle size conversion chart chart for metric (mm), US and UK sizes

All of our original knitting patterns list both metric and US sizes, and this chart lists all sizes for those occasions where you need to convert between systems. Use the search bar to quickly find the size you need.

Metric knitting needle sizes in millimetres are most commonly sold in the UK and in Europe. UK sizes are less used today, but you’ll see these when making projects from vintage knitting patterns, or using older needles.

Metric SizesUS SizesUK Sizes
2mm014
2.25mm113

2.5mm

1.5

-

2.75mm212
3mm-11
3.25mm310
3.5mm4-
3.75mm59
4mm68
4.5mm77
5mm86
5.5mm95
6mm104
6.5mm

10.5

3
7mm-2
7.5mm-1
8mm110
9mm130
10mm150
12mm17-
16mm19-
19mm35-
25mm50-

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