Enter the mil gauge, the roll length (ft), and the roll width (in) into the BOPP Film Weight Calculator. The calculator will evaluate the BOPP Film Weight. 

BOPP Film Weight Formula

The following formula is used to calculate the BOPP Film Weight. 

BOPP = g * .254 * L * W / 63,500

Variables:

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

To calculate BOPP film weight, multiply the mil gauge by the length and width, then multiply by 0.000004.

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 : 250.
  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: 

BOPP = g * .254 * L * W / 63,500

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

BOPP = 250 * .254 * 300 * 20 / 63,500 = 6.00 (lbs)

Example Problem #2

The variables required for this problem are provided below:

mil gauge = 100

roll length (ft) = 200

roll width (in) = 100

Test your knowledge and check your answer with the calculator.BOPP = g * .254 * L * W / 63,500 = (lbs)