Roll Price to Price per kg Calculator
Divide a quoted roll price by net film weight to find its effective price per kilogram. Use this to check offers where suppliers sell a nominal roll as a single priced item.
Use a saved product specification (optional)
Enter your values
First time using this calculator?
Replace the example values with figures from your supplier sheet or measurements. Choose the unit beside each value. Results update as you type; fix any highlighted field before using the result.
GSM means grams per square metre. Net weight excludes the core and other packaging. MOQ means the minimum order quantity. An optional field can stay blank unless the result you need depends on it.
Prices keep the selected currency; changing its label does not convert an exchange rate. Save or export the result after checking your inputs.
Label only. No exchange-rate conversion.
Help with net film weight
Use material weight only. Subtract the core, pallet and outer wrapping from a gross shipment or roll weight. Find the net value on the supplier sheet or weigh it separately.
Price per kg
Use net film weight, excluding the core and packaging.
Price/kg = roll price ÷ net film weight
240 ÷ 80 = 3/kgSaved calculations stay in this browser. No account or cloud backup is created.
Save to a product project (optional)
Choose or create a saved product project ↗This is an illustrative example. Saved or transferred values must be checked against your job.
Calculated from your inputs. Confirm specifications with your supplier.
How sensitive is this result to your assumptions?
Vary one input and inspect price per kg
All other entered inputs stay fixed. Ranges are your scenarios, not statistical confidence or supplier performance predictions. This uses the same validated calculator engine.
The formula, made clear.
The denominator must be usable film mass, not the total shipping weight. A heavier core changes gross weight without increasing the film available to production. If a quoted roll price includes core or packing charges, the result is an effective all-in roll price per kilogram of film; it does not isolate the supplier’s underlying resin or converting price. Comparing this number with an unbundled material quotation requires aligning those commercial inclusions.
How to use this calculator
- 01
Enter the total quoted price for one roll.
- 02
Enter its net film weight, after subtracting the core and any protective packaging.
- 03
Use the normalized result to compare roll offers with consistent specification and charge coverage.
A calculation you can check
The example converts a single-reel quotation into an effective kilogram price using the reel’s net film content.
- Price per roll
- 240 EUR
- Net film weight
- 80 kg
240 ÷ 80 = 3/kgCheck the displayed formula and units against your quotation. Use measured GSM, net weight and actual layout dimensions where available. Default densities are planning assumptions, not certified material properties. Calculated cost does not certify strength, compatibility or safe loading.
Method, units and material assumptions ↗