When you look on a package, you should see an icon indicating the weight. It will look like a skein of yarn with a number in it. The following list shows you the types of yarn you can expect in each category.
Fingering and 10-count crochet thread are considered lace weights. This is the finest type of yarn available and is for delicate projects.
1. Super Fine
Sock, fingering and baby weights fall under the Super Fine category. These yarns make delicate baby clothes, socks and other dainty items.
Sport and baby weights are part of the Fine category. These are smaller weights designed for total flexibility and comfort.
DK and light worsted are examples of Light yarns. These yarns are suitable for very lightweight garments.
Worsted, afghan and aran weights are Medium yarns. This is the most common category, suitable for most basic knitting projects.
Chunky, craft and rug weights are Bulky yarns. Thick, scrumptious scarves, cushy rugs and other thicker items can be made with these yarns.
6. Super Bulky
Bulky and roving yarns fall under this category.
Each type of yarn will have a specific gauge, which means how many knit or crochet stitches you will get per inch with the size of yarn you have. Follow the gauge instructions on the package to get just the right size needles.