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eng.corrugated-box-McKee-formula Calculator
Calculates corrugated box compression strength using the McKee formula from material ECT (Edge Crush Test) and box dimensions. The McKee formula BCT = 5.87 × ECT × √(t × Z) is the standard industry formula for estimating box stacking strength from material properties.
Inputs
Ect N M
Reference formula or conversion factor shown for context.
P M
Reference formula or conversion factor shown for context.
Z Caliper Mm
Reference formula or conversion factor shown for context.
A M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Results
box compression strength BCT (N)
The computed compression ratio or compressive force. Higher compression ratios store more energy but increase heat and pressure.
BCT (kN)
Sample size or count used in the calculation.
ECT contribution
Sample size or count used in the calculation.
geometric factor √(Z·A)
A dimensionless multiplier applied in the calculation.
BCT = 5.876·ECT·√(Z·A)
Reference formula or conversion factor shown for context.