Packaging Film Weight Calculator
Estimate how many grams of laminate go into one bag - the number that drives material cost and freight. Enter the bag dimensions, choose the construction, then set film thickness and material density.
Estimate film per bag
Dimensions in cm; thickness in micron.
Results
Film per bag
-g
Per 1,000 bags
-kg
Film area per bag
-cm²
Per 1,000 bags incl. waste
-kg
Order total incl. waste
-kg
How film weight is calculated
Film weight is simply the surface area of material, times how thick it is, times the density of the laminate.
- Weight (g) = Area (cm²) × (thickness µm / 10000) × density
- Area by construction: flat 2WH; stand-up 2WH + W×G; side-gusset 2WH + 2GH; flat-bottom 2WH + 2GH + WG.
- Thickness in µm is divided by 10,000 to convert to centimetres before multiplying.
Add roughly 5-10% for seals and trim waste when budgeting. Use the density table for common laminate materials.
Material density reference
Approximate densities for films used in flexible-packaging laminates. For a multi-layer structure, use a weighted average - a typical PET/foil/PE laminate lands near 1.2 g/cm³.
| Material | Density (g/cm³) | Apply |
|---|---|---|
| PET (polyester) | 1.40 | |
| BOPP | 0.91 | |
| CPP | 0.91 | |
| PE / LDPE / LLDPE | 0.92 | |
| Nylon (BOPA) | 1.15 | |
| Aluminium foil | 2.70 | |
| Metallised PET | 1.40 | |
| EVOH | 1.17 | |
| PLA (compostable) | 1.25 | |
| Typical 3-layer laminate (avg.) | 1.20 |
Ready to order? Get these bag types made
Turn the numbers above into a finished spec sheet. Send us your dimensions, material and quantity and our engineers reply with a firm quote and free samples within one business day - produced in-house at our own cleanroom facility.
Frequently asked questions
How do I calculate the weight of packaging film per bag?
Work out the total film area of the bag for its construction, multiply by the thickness converted to centimetres (µm / 10000), then multiply by the material density in g/cm³.
What density should I use for a laminate pouch?
Use a weighted average of the layers. A typical PET/foil/PE laminate is close to 1.2 g/cm³, while an all-PE or BOPP/CPP structure is nearer 0.92 g/cm³.
Why does film weight matter for my order?
Film is usually the largest material cost in a pouch and also sets the freight weight, so a few grams per bag adds up quickly across a full production run.
Can we confirm the exact film weight for my pouch?
Yes. Send us your dimensions, structure and quantity and our engineers will confirm the real film weight and quote.
Results are engineering estimates for planning and quoting. Real-world values vary with material lot, structure, tolerance and process. For production-grade figures, confirm with our team.