How to decide how many stitches to add to get desired size

Posted by: Megan (IP Logged)
Date: August 14, 2009 11:07AM

I'm knitting socks for my daughter. My pattern calls for worsted weight yarn but my yarn is superfine wool. I'm puzzled about how to obtain the correct number of stitches without using trial and error. Thanks in advance for any tips you may be willing to provide.