Here are the common weights and names of yarn. I find this super helpful to refer to.
Now, if you aren’t really as organized as some people, you may have bits & pieces of yarn that you have lost the label to and don’t know what weight it is.
They sell little tools that you put your yarn through and it shows the weight. But, you don’t need one of those.
Simply take your yarn, wrap it around any object. I happen to like pens or pencils because they are always around. Then, measure out one inch on the object and simply count the number of times the yarn went around in that inch!
Peace, Love & Low-Tech Hacks
Hoosier Barn Chick