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Wraps Per Inch (WPI) Chart

Wraps Per Inch ruler

This is the chart I use to determine wraps per inch, or the number of times a yarn wraps around one inch on the ruler.

WPI Designation
18+
Laceweight
16
Fingering
14
Sport
12
Worsted
10
Bulky
8 or fewer
Super-bulky

 


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