Home › Features › Box compression (BCT) calculator
The bottom case on a pallet carries everything above it. Product2Pallet estimates its box compression strength with the McKee formula and compares it with the real load.
Start planning — freeBox compression is estimated from edge crush (ECT), board thickness and case perimeter — the industry-standard method used by packaging engineers.
We apply a ×3 factor for storage time, humidity and handling, so a pass means a real margin, not just a number on paper.
If a case is too weak, we tell you the minimum ECT needed so you can talk to your box supplier with confidence.
No. ECT measures the board; BCT measures a finished box. BCT depends on ECT, board thickness and box size.
Should I still test real boxes?Yes. Calculations guide your choice; compression testing real cases confirms it.