DK weight (double knit) is the most popular of all yarn weights – perfect for sweaters, pullovers and cardigans, accessories, kidswear and homeware. Usually knit on 4.00mm needles (from 3.75mm – 4.50mm depending on your personal tension) DK yarn is sometimes known as 8-ply or Light Worsted.
Yarn thicknesses US / UK alternatives.. Knitting needles in the UK are now sold in metric measurements. However. 8 ply, double knit, dk, worsted weight.
Yarn weight refers to the thickness of yarn used by knitters, weavers, crocheters and other fiber. Knitting a Test swatch requires at its simplest, knitting the yarn into a small, roughly 4 in (10 cm) square textile of even. 5 or Bulky, Chunky, Double Double Knit (rare), 12 or 16 ply, 100-130, 6-8 wpi, 5.5 – 8, 6.5 – 9, Craft, Rug.
A spinner is spinning to a count even if the yarn is subsequently going to be called "Double Knitting" or "Tkt 12" – it's like spinning to the correct recipe regardless .