Yarn Weights

The chart below shows common yarn weights and categories. All data are approximate due to differences in yarn characteristics and knitting tension.

Symbol Name Gauge (4in/10cm) WPI (Wraps Per Inch) Ply Recommended Needle Size
lace Thread  000-1 US
1.5-2.25 mm
lace Cobweb 1 ply  000-1 US
1.5-2.25 mm
lace Lace 32-34 stitches 2 ply 000-1 US
1.5-2.25 mm
lace Light Fingering 32 stitches 3 ply 000-1 US
1.5-2.25 mm
super fine Fingering 28 stitches 14 wpi 4 ply 1-3 US
2.25-3.25 mm
fine Sport 24-26 stitches 12 wpi 5 ply 3-5 US
3.25-3.75 mm
light DK 22 stitches 11 wpi 8 ply 5-7 US
3.75-4.5 mm
medium Worsted 20 stitches 9 wpi 10 ply  7-9 US
4.5-5.5 mm
medium Aran 18 stitches 8 wpi 10 ply  7-9 US
4.5-5.5 mm
bulky Bulky 14-15 stitches 7 wpi 12 ply 9-11 US
5.5-8 mm
super bulky Super Bulky 8-12 stitches 5-6 wpi 11 or larger US
8 mm or larger

For more information, visit yarnstandards.com and craftyyarncouncil.com.