Good morning everybody. I have decided to knit covers for 2 -18inch square couch pillows, that I have. What I can't figure out is how do you calculate how many stitches you need to cast on? I am a beginner knitter.
with the yarn you want to use knit up a small test swatch. count how many stitches you get in a n inch then multiply this by 18 to see how many stitches you would need. I would probable add at least an extra inch worth of stitches for seaming and to alow for the curve of a cushion.
eg. in your swatch you have 5 stitches per inch. 5 x 18 = 90 stitches. i might cast on 100 to be sure.