The fabric has threads/cm (or thr/inch),
	and I am stitching across threads of fabric.
	The work will have stitches/cm (= st/inch),
	and will be cm wide and cm high.
	I want cm extra fabric around the design and
	cut a piece of cm wide and cm high.
Fill in the blank fields. At the top left fill in the number of grids in width and height the charted design has. On the right fill in the data of the stitching fabric. Click somewhere on the form to execute the calculation.  Calculate in inches?