Web Roll Diameter Calculator.
Calculate the size of a material roll
This application will calculate the size of a roll. Fill in the text boxes below with the roll parameters described in the headings. The calculated diameter will automatically update.
Calculated Roll O.D.:
Notes:
Film Length: the total linear feet length of the roll
Film Thickness: the total thickness (this includes everything, such as release liners and adhesive thickness). It might be useful to measure the thickness if it is not a raw material. 1 mil = 0.001 inch; So 10 mil = 0.010 inch.
Core Thickness: Typically 3 inches or 6 inches
Core Wall Thickness: The thickness of the core wall, for example 0.25 inches for quarter inch.