Originally Posted by Lisa_wanna_b_quilter
When I make HST, I cut squres 1 inch bigger than I want the finshed size. Sew 1/4" on each side of the diagonal, cut apart and trim to fit.
If you don't want to trim, add a "generous" 7/8" to the desired finished size. Many people feel it's easier and more accurate to add 1" and trim after it's sewn.