Edge Crush Test Calculator

Calculate box compression test (BCT) strength

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Unit System

Edge Crush Test (ECT) Value

lb/in

Board Caliper (Thickness)

Box Perimeter (2L + 2W)

Estimated Box Compression

469.5

lbs

* Based on the simplified McKee formula.

* Results assume a standard regular slotted container (RSC) and standard flute profiles.

* A safety factor (typically 3:1 to 5:1) should be applied for actual stacking limits depending on humidity and storage duration.

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About Edge Crush Test Calculator

The Edge Crush Test (ECT) calculator allows packaging engineers to estimate the Box Compression Test (BCT) strength of corrugated cardboard boxes. By inputting the edge crush test value, board thickness, and box perimeter, the simplified McKee formula calculates the theoretical top-to-bottom compression strength of a regular slotted container (RSC).

Edge Crush Test Calculator Features

Supports standard Imperial (lb/in) & Metric (kN/m)
Instant Box Compression Test (BCT) estimates
Useful for packaging design and logistics

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