Film Type
g/cc
g/m²
Film Thickness
—micron
Film Density Reference
| Film | Density |
|---|---|
| BOPP | 0.905 |
| MET BOPP | 0.910 |
| PET | 1.390 |
| MET PET | 1.400 |
| PE/LLDPE | 0.920 |
| CPP | 0.900 |
| Nylon | 1.140 |
| Alu Foil | 2.700 |
Frequently Asked Questions
GSM stands for Grams per Square Metre. It is the weight of a film per unit area, used to specify film thickness indirectly. Higher GSM means heavier, typically thicker film.
Micron (μ) is the unit of film thickness. One micron = 0.001mm. A typical BOPP film is 20 micron (0.020mm) thick.
GSM and micron are related through density. The formula is GSM = (Micron × Density) ÷ 10. Different films have different densities, so you must use the correct value.
Yes. All calculators on GSMCalculator.com are completely free.