How to Calculate Yarn Weight Converter
What is Yarn Weight Converter?
The Yarn Weight Converter maps US weight (0-7), UK name (lace, DK, aran, chunky), AU ply (2-16), and WPI (wraps per inch). Worsted weight = US 4 = UK Aran = AU 10-ply = WPI 9-12. Essential for substituting yarns across pattern publishers.
Formula
Mapping table — use WPI for unlabeled yarn
Step-by-Step Guide
- 1Enter required inputs
- 2Calculator outputs key result and related metrics
- 3Review and compare scenarios
Worked Examples
Input
US 4
Result
UK Aran / AU 10-ply / WPI 9-12
Common Mistakes to Avoid
- ✕Forgetting to include all relevant inputs
- ✕Using outdated reference values
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