You can make a fabric box with any size square! Check out how easy it is.Makes a great quick and easy gift.\rbrThe formula would be as follows:\rbr\rbrTo determine the starting square size:\rbrStep 1: The box height + the square size\rbrStep 2: Multiply Step 1 by 1.5. The answer is your starting square size (and includes your seam allowance).\rbr\rbrTo determine the corner length to sew:\rbrThe box height is always the length of the sewn corner.\rbr\rbrExample:\rbr\rbrIf you want a 4-high and 6-square box, then:\rbr\rbrThe starting square size is:\rbrStep 1: 4 + 6 = 10\rbrStep 2: 10 x 1.5 = 15 starting square size.