Method / assumptions / examples
How this calculation works
The result is deterministic: the same measurements always return the same estimate. Here is the relationship and where real-world results can differ.
01
Formula
Area = quantity × width × length; Weight = area (m²) × GSM
Piece dimensions are converted to metres before calculating total square metres. This is theoretical finished-piece usage and does not include matrix, trim, setup, or spoilage.
02
Worked example
Examples
10,000 pieces
Ten thousand 4 × 6 in pieces cover about 154.8 m² (1,666.7 ft²) and weigh 12.4 kg at 80 g/m².
03
Common mistakes
What to check before using the result
- Use the cut or finished footprint only for a net-material estimate.
- Select a saved SVG to reuse its measured width and height as the finished-piece footprint.
- Apply a separate waste allowance for lane gaps, edge trim, skeleton, setup, and process loss.
- For multilayer constructions, use the combined finished GSM or calculate layers separately.
04
FAQ
Frequently asked questions
Does this include production waste?
No. It reports theoretical finished usage. Add an allowance based on the layout and process, or use the waste calculator after production.
Can I use this for sheets?
Yes. Treat each sheet as one piece and enter the sheet dimensions and total quantity.