Yarn weight

Yarn weight is the thickness of yarn used to create a project by knitting, weaving, or crocheting. Changing yarn weight or needle size can have a significant impact on the finished project.

Yarn weight is important in achieving the correct gauge or tension for a particular project and can help with yarn substitution.

Most yarns state their weight on the ball band but some may not, only giving the composition.

It is particularly important in crocheting amigurumi, so as not to have too wide stitches because the fiberfill may come out.

A decision on the choice of yarn weight is usually accompanied by that on the choice of a crochet hook.