HOW TO MEASURE FOR CUSTOM PLASTIC BAGS

Measuring for plastic bags & liners

Measuring for a Box Lining
  • Measure the width, depth and height of the box to be lined. The depth is the shortest side.
  • Add 1" to the width and depth of the box to determine the width and depth of the bag
  • For the Length (L) of the bag add the depth + Height + 7 inches.

    Example: If the box size is 18" (wide) x 12" (deep) x 14" (high), the bag dimensions are as follows: Width (W) is 19" Depth (D) is 13" Length (L) is 33"
measuring a box lining
Measuring for a Round Container
  • Measure the diameter and height of the container to be lined.
  • To determine the Circumference (C) of the container, multiply the diameter by 3.14.
  • To determine the Width (W) of the bag, divide the Circumference (C) by 2. Add 1" for a looser fit.
  • To determine the Length (L) of the bag, add the diameter to the height. Add 5" for overhang.

    Example: If the container size is 12" (diameter) x 30" (height), the bag dimensions are as follows: Width (W) is 20" Length (L) is 47"
measuring for a round container
Measuring for a Square Container
  • Measure the width, depth and height of the container to be lined. The depth is the shortest side.
  • To determine the Width (W) of the bag, add the width of container + depth of container + 2" for a looser fit.
  • To determine the Length (L) of the bag, add 1/2 the depth to the height. Add 5" for overhang.

    Example: If the container size is 14" (wide) x 10" (deep) x 32" (high), the bag dimensions are as follows: Width (W) is 26" length (L) is 42"
measuring for a square container
How to Measure for Gusseted Bags
how to measure for gusseted bags how to measure for gusseted bags - covers how to measure for gusseted bags - inner liners

Gusseted Bags:

The length and width of gusseted bags are the outside dimensions side to side and from top to bottom. The gusset is measured by its expansion diameter (D).

For Covers:

Add approximately 4" to either width (W) or depth (D) for a loose fit.
For length (L) and half of depth (D) to actual length.

Example:
(W) 46" + 4" = 50"
(D) 49" = 49"
(L) 50" + 25" = 75"

Size to Order:
50"x 49" x75"

For an Inner Liner:

Use the same procedure as above for width and depth. For length, add all of depth (D) to actual length plus 4" to 6" for overlapping the ends of liner. Add 10" to 12" if you plan to tie off bag.

Example:
(W) 46" + 4" = 50"
(D) 49" = 49"
(L) 50" + 49" = 110"

Size to Order:
50"x 49" x110"
How to Measure for Gusseted Bags
The dimensions for re-closable bags are based on the outside dimensions from side to side and from the bottom of the zipper to the bottom of the bag.
How to Measure for Liners
how to measure for liners - width how to measure for liners - overall length how to measure for liners - tie-off length

WIDTH:

Divide the circumference of the container 2. For a looser fit, add 1"-2" to this number for the flat width of the bag. For a gusseted bag, the width plus the depth (or gusset) will equal the flat width of the bag. For example, a 16" x 14" x 36" is the same as a 30" x 36" bag.

OVERHANG LENGTH:

Measure the container height and add the diameter plus 4" for overhang to determine your overall length.

TIE-OFF LENGTH:

For tie bags, add the full diameter plus 4" to the overall height to determine your overall length.
Measuring for a Pallet Cover
  • Measure the width, depth and height of the pallet to be covered. (The depth is the shortest side).
  • Add 2" to the width and the depth (W) of the pallet for the size of the cover
  • The Length (L) of the cover is determined by adding ½ of the depth to the height.

    Example: If the pallet size is 40" (wide) x 36" (deep) x 50" (high), the cover dimensions should be: Width (W) is 42" Depth (D) is 38" Length (L) is 68"
how to measure for a pallet cover


Dana Poly offers a large variety of plastic bags all manufactured in the United States at our headquarters plant in New Jersey. We're pleased to offer these measuring guidelines to ensure you get the plastic liner or plastic bag that's just right for your application. Please call Dana Poly at 1-800-474-1020 for additional assistance.