Roll converting tool
Roll diameter & slitting calculator
Estimate outside diameter, target-diameter winding length, material weight and slitting utilization. All film thickness inputs use millimetres.
Input parameters
Define the roll
Use 1.000 for a standard estimate. Tightly wound rolls may use 0.980–0.995; rolls with more interlayer air may use 1.005–1.020.
Material structure
Film layers
Thickness is entered in millimetres. 1 silk = 0.01 mm. Density values are editable reference values.