Work out corrugated board requirement instantly with clear inputs, formula shown and shareable results.
Corrugated board is bought by area or weight, so the blank size drives the order: area per box is blank length x blank width, uplifted around 4% for trim and make-ready waste. Multiplying by board grammage gives tonnage, which is how the mill invoices.
Board requirement
Area = blank length x blank width x boxes x 1.04; weight (kg) = area (m2) x grammage (g/m2) / 1000
Slitting and creasing trim, set-up sheets, and rejects at the printer-slotter. High-graphics or short-run jobs need more, sometimes 8-10%.
Yes. The blank is the flat sheet before folding, so its length spans all four panels plus the glue tab and its width spans the body depth plus both flap sets.