I do cut my sqs 18" and then do a rolled edge on all 4 sides, so it's a little bit smaller than the 18", but not much. That is a good sized napkin.
I'm glad to know this answer too! Thanks for asking it, and thanks for the answers! Flowers all around
thanks for the question, i took some fabric out last night to make napkins. hugs Toni lee
A good size dinner napkin is 18 inches, after the hem (or serge). I have a friend who likes to make hers a very generous 20"!! Some store bought ones are 16".