Woven Threads
Musings on Fiber

WPI to EPI

March 4th 2010 in Howto, Tips

According to Wikipedia, the way to calculate EPI is as follows:

First calculate the Wraps per inch, then depending on the weave multiply to get the ends per inch:

Tabby
WPI * .5
Twill
WPI * 2/3

I got a really nifty tool for counting WPI from KnitPicks for my birthday.

Disclaimer:  I have no connection with KnitPicks other than being a satisfied customer.

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