Note that while sock weight yarn is fingering, but not all sock yarns are fingering. Most are but some are heavier so just check it says sock weight (or look at the gauge to get an idea). And we did have some here for one winter that were only a lace weight-half the weight of fingering.catlover1960 said:Sock yarn usually has a percentage of nylon with the wool so socks wear better. Sock weight yarn is generally considered fingering weight but not all fingering weight yarn will work well for socks.
Lace yarn is thinner than fingering yarn.
Hopefully this chart will help answer your question