Enter the mil gauge (mil), the roll length, and the roll width (select units as needed) into the BOPP Film Weight Calculator. The calculator will evaluate the BOPP Film Weight.

BOPP Film Weight Calculator

Enter any 3 values to calculate the missing variable

BOPP Film Weight Formula

The following formula is used to calculate the BOPP Film Weight (this assumes a typical BOPP density of about 0.91 g/cm³).

BOPP_{lb} = g_{mil} * L_{ft} * W_{in} * 0.0003946

Variables:

  • BOPP is the BOPP Film Weight (lbs)
  • g is the mil gauge (mil)
  • L is the roll length (ft)
  • W is the roll width (in)

To calculate BOPP film weight in pounds, multiply the mil gauge by the roll length (ft) and roll width (in), then multiply by about 0.0003946 (this constant depends on the material density; the calculator uses 0.91 g/cm³).

How to Calculate BOPP Film Weight?

The following two example problems outline the steps and information needed to calculate the BOPP Film Weight.

Example Problem #1

  1. First, determine the mil gauge.
    • The mil gauge is calculated to be: 2.54.
  2. Next, determine the roll length (ft).
    • The roll length (ft) is measured to be: 300.
  3. Next, determine the roll width (in).
    • The roll width (in) is found to be: 20.
  4. Finally, calculate the BOPP Film Weight using the formula above:

BOPPlb = g * L * W * 0.0003946

The values provided above are inserted into the equation below and computed.

BOPP = 2.54 * 300 * 20 * 0.0003946 = 6.01 (lbs)

Example Problem #2

The variables required for this problem are provided below:

mil gauge = 1.0

roll length (ft) = 200

roll width (in) = 100

Test your knowledge and check your answer with the calculator. BOPP = g * L * W * 0.0003946 = (lbs)