Roll Length Calculator

Calculate Roll Length





Formula

To calculate the Roll Length (L):

\[ L = \pi \left( \frac{OD^2}{4} - \frac{ID^2}{4} \right) \div t \]

Where:

What is Roll Length?

Roll length is defined as the length of a material that has been rolled into a cylindrical form with a given material thickness. It is calculated by multiplying the difference between the squares of the outer and inner diameters divided by 4, by π, and then dividing by the thickness.

Example Calculation 1

Let's assume the following values:

Using the formula:

\[ L = \pi \left( \frac{1^2}{4} - \frac{0.5^2}{4} \right) \div 0.01 = 98.17 \text{ meters} \]

The Roll Length is 98.17 meters.

Example Calculation 2

Let's assume the following values:

Using the formula:

\[ L = \pi \left( \frac{2^2}{4} - \frac{1^2}{4} \right) \div 0.05 = 47.12 \text{ meters} \]

The Roll Length is 47.12 meters.