Polybag size calculator
Poly bags come in varying sizes. Finding the correct bag size for your product can be difficult. It is essential to find the correct bag size to save time and money. When buying bags is please use the following calculator to find a bag size close to your requirements. Not only does this save money but it helps protect the environment by using less packaging material.
Box Liner – Gusseted poly bags
Box lining gusseted poly bags are great for keeping the product's moisture away from the box. Large gusseted box poly bag liners are perfect for shipping produce, frozen items and any product with moisture.
Steps
- 1. Width (W) of bag = width of box + 1”
- 2. Depth (D) of bag = depth of box + 1”
- 3. Length (L) of bag = height of box + depth of box + 6” to allow coverage of box contents.
Note: Depth (D) is the shorter of the 2 sides.
Example
- Box: 18” width W x 12” depth D x 14” height H
- Gusseted poy bag: 19” width W x 13” depth D x 32” length L
Measuring layflat tubing
Layflat tubing is usually used for a square container.
- 1. Width (W) of the bag = width + depth of the container + 2" for a looser fit.
- 2. Length (L) of the bag = height of the container + half of the depth to the height. Add 5" for overhang.
Example: For a container 14" W x 10" D x 32" H, the bag should measure at least 26" W x 42" L.
Measuring gusseted bags
Gusseted bags are usually used as pallet covers.
Note: Depth (D) is the shorter of the 2 sides.
- 1. Width (W) of the cover = width of the pallet + 1-2"
- 2. Depth (D) of the cover = depth of the pallet + 1-2"
- 3. Length (L) of the cover = height of the pallet + half of the depth
Example: For a pallet 40" W x 36" D x 50" H, the cover should measure at least 42" W x 38" D x 68" L.
Measuring ziplock bags
A re-closable poly bag is manufactured with a slider zip closure.
- 1. Measure Length (L) from the bottom of the bag to the base of the re-closable seal.
- 2. Measure Width (W) of the bag from side to side.
- 3. For rigid items, add .5" to the Width (W) of the bag to allow the item to fit through the opening.
- 4. For thick or bulky items adjust dimensions accordingly.
- 5. Add 0.5" to 2" to both dimensions for a looser fit.
Example: For a flat product 3.5" W x 5.5" D, the bag should measure at least 4" W x 6" L.
Measuring slider polybags
Slider top poly bags provide a highly protective barrier against moisture and vapor.
- 1. Measure Length (L) from the bottom of the bag to the bottom of the slider closure.
- 2. Measure Width (W) of the bag from side to side.
- 3. For rigid items, add 1.5" to the Width (W) of the bag to allow the item to fit through the opening.
- 4. For thick or bulky items adjust dimensions accordingly.
- 5. Add 0.5" to 2" to both dimensions for a looser fit.
Example: For a flat product 2.5" wide by 5.5" deep, the bag should measure at least 4" W x 6" L.
