If you’re buying yarn online it may well be coming from outside the UK. This handy yarn weight conversion chart will help you determine the differences in yarn weights for the United States; the United Kingdom; and Australia.
Yarn weight conversion chart
| US Yarn Weight | UK Yarn Weight | AUS Yarn Weight |
| 0 thread, cobweb, lace weight, | lace, 1-2 ply | 2 ply |
| baby yarn, lace | 3 ply | 3 ply |
| sport weight, fingering, baby yarn | 4 ply | 4-5 ply |
| light worsted weight, | dk, 8 ply | 6-8 ply |
| worsted weight, afghan | aran, 10 ply | 8 ply |
| bulky, rug, | chunky, 12 ply | 10-12 ply |
| roving, super bulky | super chunky | 14-16 ply |
You may also want to take a look at my crochet stitch conversion and crochet hook conversion charts.
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