Folding Carton Board Requirement Calculator
Plan board area and weight for a folding-carton order from actual blank dimensions, GSM and process waste. Add sheet dimensions when a whole-sheet requirement is needed.
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.
Help with good cartons required
Enter the usable quantity you actually need. Waste, pack rounding or minimum order effects are added separately where required.
Help with board gsm
GSM is the weight of one square metre of material, in grams. Find it on the supplier specification; use the complete laminate value for layered film.
Help with process loss on gross input
Use a measured or supplier-confirmed percentage where possible. Check whether it applies to gross input or finished output; the formula below shows the basis used here.
Additional measurements (optional)
These are only needed for additional result units or a more detailed estimate. Entered values still affect the result when this section is closed.
Gross blank area required
Uses actual blank dimensions. Finished internal or external package dimensions do not establish an exact die-line blank.
Waste is a fraction of gross input lost. Gross requirement = good output ÷ (1 − waste/100).
Optional sheet purchasing adds rectangular offcuts to the gross blank requirement.
Compares two uniform rectangular orientations only. Excludes gutters, gripper margins, grain-direction restrictions and irregular die-line nesting.
Gross blank area = carton quantity ÷ (1 − waste/100) × actual blank area; kg = area × GSM ÷ 1,000
10,000 ÷ (1 − 5/100) × 0.2 = 2,105.263158 m²; × 300 ÷ 1,000 = 631.5789474 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 gross blank area required
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 good-carton target is converted into gross blank equivalents using the retained production fraction. Their combined area and basis weight determine the board requirement. A whole-sheet estimate also needs the number of blanks that fit on each sheet, because unused sheet area is not captured by summing blank rectangles alone.
How to use this calculator
- 01
Enter order quantity and verified blank dimensions.
- 02
Enter board GSM and the percentage of gross input lost during production.
- 03
Supply sheet dimensions for a rounded sheet estimate and review its layout assumptions.
A calculation you can check
The example scales a folding-carton blank to an order requirement, includes production loss and checks whole-sheet purchasing where dimensions are supplied.
- Good cartons required
- 10000 units
- Actual blank width
- 500 mm
- Actual blank length
- 400 mm
- Board GSM
- 300 g/m²
- Process loss on gross input
- 5 %
- Sheet width (optional)
- mm
- Sheet length (optional)
- mm
10,000 ÷ (1 − 5/100) × 0.2 = 2,105.263158 m²; × 300 ÷ 1,000 = 631.5789474 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 ↗