Container loading calculator
Container loading calculator: pack identical cartons onto an ISO floor, stack to interior height, stop at typical payload. Interiors are averages — 20ft about 33.2 CBM, 40ft 67.7, 40HC 76.4 — not a CSC plate. Palletize first, then count pallets into the box.
Carton & container
Load plan
Cartons loaded—
Per layer × layers—
Cube used—
Load weight—
Upright cartons, stacked to the ceiling, stopped by payload. Typical interiors — check the CSC plate.
How it works
- Pack the carton footprint on the interior floor (mixed orientation optional).
- Layers = floor(interior height / carton height).
- Stop if payload would exceed the typical max cargo mass.
Interiors vary by manufacturer. Check the CSC plate on the box you actually get.
Questions
Cartons or pallets?
This page floor-packs cartons. For pallets into a box use pallets in a 40ft or the shipment planner.
Why is my count lower than CBM math?
CBM ignores packing loss. Integer cartons leave air around the door and in the last layer. 80–90% of rated CBM is a sane planning band.