How many stitches do you need for a blanket square?
Cast on enough stitches to make 8” (20cm), which should be anywhere from 35 to 40 stitches. Try to make your stitches neither too loose nor too tight to help ensure uniform squares. This may vary slightly depending on your tension.
How much should I cast on for a blanket?
A 96 stitch cast on would result in a small lap blanket. If you want a medium sized blanket, then try casting on 120 stitches. For a large lap blanket, cast on 160 stitches. For an extra-large lap blanket, cast on 200 stitches.