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Knitting Needle and Yarn Size Conversion Tables

Conversion charts for yarn weights, knitting needles sizes (UK, Metric & US), and knitting terms

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Working a yarn over at the beginning of a row before a knit stitch. Diagram 1

Since there are considerable differences in knitter’s terminology for yarns and needle sizes throughout the world I thought it might be handy to make these tables available.

Needles

Needle conversions are to the nearest .25mm

For instance, US size 6 needles are actually 4.25mm but since there is no metric needle size 4.25mm the closest size, 4mm, is the best equivalent. Since you should always check your gauge before commencing your garment this shouldn’t cause any problems.

US Metric Old UK
0 2mm 14
1 2.25mm 13
2.5mm
2 2.75mm 12
3mm 11
3 3.25mm 10
4 3.5mm
5 3.75mm 9
6 4mm 8
7 4.5mm 7
8 5mm 6
9 5.5mm 5
10 6mm 4
10 ½ 6.5mm 3
7mm 2
7.5mm 1
11 8mm 0
13 9mm 00
15 10mm 000

Japanese Needle Sizes

0 = 2.1mm
1 = 2.4mm
2 =2.7mm
3 = 3.0mm
4 = 3.3mm
5 =3.6mm
6 = 3.9mm
7 = 4.2mm
8 = 4.5mm
9 = 4.8mm
10 = 5.1mm
11 = 5.4mm
12 = 5.7mm
13 = 6.0mm
14 = 6.3mm
15 = 6.6mm

Yarns

Australia/UK US Approximate Tensions
2 ply lace weight
3 ply, 4 ply, 5 ply, jumper weight fingering 32 – 26 sts to 4 inches (10cm)
8 ply, dk, double knit sport weight – double knit 22 – 24 sts to 4 inches
10 ply, aran weight worsted weight 20 sts to 4 inches
12 ply worsted weight 16 – 18 sts to 4 inches
14 ply bulky 14 sts to 4 inches

Copyright © 1996 – 2002 Sarah Bradberry.

Pre printed needle size charts are copyright Sarah Bradberry 2006.

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