Determining Roll Diameter

The following is an approximate formula for determining the diameter of a roll of fabric. The formula generally underestimates roll diameter for fabrics with texture or some specialty yarns. Also, actual diameters can vary at different take-up tensions.

T = thickness of fabric (inches)
Where, Y = linear yards of fabric
C = core diameter (OD)

Style 7628, Greige
Example: 1500 yards
4" core