Enter the width (in), the length (in), and the millage into the Poly Bag Weight Calculator. The calculator will evaluate the Poly Bag Weight. 

Poly Bag Weight Formula

The following formula is used to calculate the Poly Bag Weight. 

PBW = W* L * M / 15


  • PBW is the Poly Bag Weight (lbs per thousand bags)
  • W is the width (in) 
  • L is the length (in) 
  • M is the millage 

How to Calculate Poly Bag Weight?

The following two example problems outline the steps and information needed to calculate the Poly Bag Weight.

Example Problem #1

  1. First, determine the width (in).
    • The width (in) is calculated to be : 6.
  2. Next, determine the length (in). 
    • The length (in) is measured to be: 12.
  3. Next, determine the millage. 
    • The millage is found to be: 3.
  4. Finally, calculate the Poly Bag Weight using the formula above: 

PBW = W* L * M / 15

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

PBW = 6*12* 3 / 15 = 14.4 (lbs per thousand bags)

Example Problem #2

The variables required for this problem are provided below:

width (in) = 10

length (in) = 12

millage = 1.5

Test your knowledge and check your answer with the calculator.

PBW = W* L * M / 15 = (lbs per thousand bags)