Category Hub•1 Free Tools Available
Packaging & Box Dimension Tools
Master carton dimension rules, internal vs. external measurements, and dimensional weight formulas to avoid carrier surcharges.
Tools in this Hub
All tools run 100% in browserDIM CalculatorFree
How to Measure a Box (Length, Width & Height)
Box dimensions are always stated in the order of Length × Width × Height (L × W × H). Length is the longest opening side.