WPI to EPI
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.