Approx 7 1/2”

I crochet loosely and my stitches tend to be a little tall. Gauge is not crucial in something like this. There are so many options for these squares!
I measured and used 12 squares/4x3 for a baby blanket.
I would do 24 squares, 8x3 to make a rectangle shawl.
Just measure your square once finished, put as many together to get the width that you want and the length that you want.Make a front and back for a sweater, connect at shoulder, connect at side leaving armholes, crochet sleeves if you want.
Make a lap / wheelchair throw or a couch throw/afghan.
Use the pattern to make washcloths, pillow covers. There are so many options!

Supplies
* Scrap #4 yarn, approx 1 oz, 53 yds, 48m, 28 g
US I-9/5.50mm

Tips:
counts will be for one side
After you crochet corner stitches, be sure to scoot them over so you won’t miss first hidden stitch of each side.

Stitches You need to know

Magic circle / magic Ring, or use traditional CH3, slip stitch to join and continue.
DC, double crochet
FPHDC, front post half double crochet
HDC, half double crochet
Crochet in back and third loop/ (insert your hook into back loop, tilt your work toward you and you will see a smaller half bar/loop underneath. Insert your hook into that stitch as well. This gives your stitch a little bit more stability than using back loop only.)
BPDC, back post double crochet