What Are the Different Weights of Crochet Thread?

Written by jenny parker
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What Are the Different Weights of Crochet Thread?
Crochet thread is commonly used for edging. (Maria Teijeiro/Lifesize/Getty Images)

Crochet thread is thinner than yarn and comes in different weights from thick to extra fine. Each weight is identified by a number. As a general rule thicker threads have a smaller size number. Most crochet patterns will call for a specific thread size.

Size 3

Size 3 is a heavy crochet thread that works up quickly due to its thickness. Because of this, it is ideal for last-minute gifts and other projects on which you don't want to spend a great deal of time. This size works well for items such as fashion accessories, toys and home decor.

Size 5

This size is slightly smaller than size 3 but still considered a heavy weight thread. Size 5 can be used to make many of the same types of items for which one might use size 3 or size 10, particularly apparel and accessories.

Size 10

A versatile, medium-weight thread, size 10 is the most commonly used weight of crochet thread. It is known as "bedspread weight" because it is often used for bedspreads but also works on projects such as tablecloths and apparel.

Sizes 20 and Up

These are the thinnest, most delicate threads. They are generally used less frequently than the other sizes. They work well for intricate lace work on items like doilies as well as lace edging on larger projects like tablecloths, table runners and bedspreads.

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