Yarn weight and needle sizes
18 or more wpi, approximately
equivalent to lace weight, knits at 8 or more st/in, use needles size 00 to 2
16 wpi, fingering or baby weight, or maybe socks, knits at 6-8 sts/in, needles
size 2 -4
14 wpi, sport weight, sport, knits at 5-6 sts/in, needle size 4-6
12 wpi, equivalent to worsted wt knitting yarn (remember that worsted in this
instance is not talking about how the
yarn was spun, but about its approximate thickness.), 4 1/2 to 5 sts/in, needle
size 7-9
10 wpi, equivalent to bulky or chunky yarn, 3 1/2 to 4 sts/in, needle size 10 -
11
8 or less wpi, very bulky, 2-3 sts/in, needles size 13 -16