Multiply the size values
18 x 80 x 1,500 = 2,160,000.
BINGOPLAS STRETCH FILM TOOL
Stretch film weight & length calculator.
Enter width, thickness and either roll length or net film weight. Results update instantly in U.S. and metric units.
Published by BINGOPLAS · Last updated October 8, 2026 · Product specifications, availability and delivery terms are confirmed in the written quote.
Estimated net film weight8.61 lb3.91 kgRequest quote for these specs
Theoretical estimate using polyethylene density of 0.92 g/cm³. Net film weight excludes the core, carton and packaging.
CORE FORMULA
Estimate roll weight from width, gauge and length.
Net film weight in kilograms equals width (m) x length (m) x thickness (microns) x density (g/cm³) / 1,000. The default density of 0.92 g/cm³ is an estimate, not a certified measurement for every grade. Core and carton weight are excluded.
QuestionFormula
Roll weight in poundsWidth (in) x Gauge x Length (ft) x 0.000003987
Roll length in feetNet film weight (lb) / Width (in) / Gauge / 0.000003987
Gauge to milGauge / 100 = mil
Feet to metersFeet x 0.3048 = meters
EXAMPLE
18 inch, 80 gauge, 1,500 ft hand stretch film.
Apply the film factor
2,160,000 x 0.000003987 = approximately 8.61 lb of net film.
Confirm net versus gross
The core, carton and packaging are not part of net film weight, so confirm what the supplier label includes.
THICKNESS & DENSITY
Stretch film gauge, mil and micron conversion.
80 gauge equals 0.80 mil or 20.32 microns. These are thickness conversions, not load-capacity or puncture-resistance ratings.
| Decision point | Mil | Microns | Calculation basis |
|---|---|---|---|
| 60 gauge | 0.60 | 15.24 | Nominal thickness; confirm measured tolerance |
| 70 gauge | 0.70 | 17.78 | Nominal thickness; confirm measured tolerance |
| 80 gauge | 0.80 | 20.32 | Nominal thickness; confirm measured tolerance |
| 100 gauge | 1.00 | 25.40 | Nominal thickness; confirm measured tolerance |
| 120 gauge | 1.20 | 30.48 | Nominal thickness; confirm measured tolerance |
U.S. plastic-film convention: 100 gauge = 1 mil. 1 mil = 25.4 microns. Roll-weight estimates here assume density 0.92 g/cm3 (920 kg/m3); this is not a certified density for every grade. Use the quoted grade's measured density when available.
FREQUENTLY ASKED QUESTIONS
Stretch film roll weight questions.
How do I calculate stretch film roll weight from width, gauge and length?
For polyethylene stretch film, a practical estimate is width in inches multiplied by gauge multiplied by length in feet multiplied by 0.000003987. The result is approximate net film weight in pounds before core and packaging weight.
How do I calculate stretch film length from roll weight?
Use length in feet equals net film weight in pounds divided by width in inches, divided by gauge, divided by 0.000003987. Subtract core and packaging weight before using the formula when the roll weight is gross weight.
Why do two stretch film rolls with the same size have different weights?
Roll weight can differ because of actual thickness tolerance, resin density, roll length, film width, core weight, packaging, pre-stretch level and whether the label states gross or net film weight.
RELATED BUYER GUIDES
Compare roll math with real application performance.
Review the stretch film gauge guide, compare hand stretch film, machine stretch film and pre-stretched film, or use the cost-per-pallet calculator before approving a new film program.
NEED HELP CHECKING A ROLL LABEL?
Send the roll size, gauge and weight.
BINGOPLAS can help review whether a quoted stretch film roll specification is complete for your warehouse application.