See the geometry
The live roll cross-section makes OD, core, and wound stock relationships clear while exact numeric fields keep entry precise.
Turn outside diameter, core OD, and total media thickness into an estimated web length and maximum label count—right at the press, warehouse, or packing bench.
See RollLength in action
The live roll cross-section makes OD, core, and wound stock relationships clear while exact numeric fields keep entry precise.
Enter label length and gap. RollLength derives pitch, floors the theoretical maximum, and deducts your optional production reserve.
Start from required web length or usable labels and calculate the outside diameter you should expect.
Move from physical measurements to label-specific checks and reusable production records—all on the device.




Based on 127 mm OD, 25.4 mm core OD, 0.16 mm total thickness, 50 mm label length, and 3 mm gap.
Planning estimates assume uniform thickness and winding. Verify critical production runs physically. Maximum-OD checks compare diameter only and do not verify overall printer compatibility.
No account, advertising, analytics, tracking, or collected personal data. Your saved roll tickets and presets remain on your device.
