Roll Length Calculator

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Calculates the length of a rolled-up rectangular sheet based on its diameter, core diameter, and number of rotations.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Rolled Diameter, Core Diameter, and Number of Rotations in the units shown.

Step 2

Read Roll Length and Average Diameter in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Rolled Diameter: 5 inches; Core Diameter: 1 inches; Number of Rotations: 10 rotations

Roll Length: 125.6637061 inches; Average Diameter: 3 inches

Rolled Diameter: 10 inches; Core Diameter: 2 inches; Number of Rotations: 15 rotations

Roll Length: 376.9911184 inches; Average Diameter: 6 inches

Rolled Diameter: 20 inches; Core Diameter: 3 inches; Number of Rotations: 25 rotations

Roll Length: 1,335.176878 inches; Average Diameter: 11.5 inches

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