How to Measure a Corrugated Box Correctly
Entity Coverage
Measure a corrugated box as Length × Width × Depth from the inside, with length the longer opening dimension, width the shorter, and depth the height — in that order. This answer gives the method.
| Dimension | Rule |
|---|---|
| Length | Longer opening side |
| Width | Shorter opening side |
| Depth | Height, inside |
| Measure | Inside, not outside |
FAQ
Q1: How do I measure a box?
A: Measure inside as Length × Width × Depth — length is the longer opening side, width the shorter, depth the height.
Q2: Inside or outside?
A: Inside dimensions matter for fit; outside dimensions matter for freight — specify which you mean.
Q3: Why does order matter?
A: Carriers and box makers use L×W×D convention, and mixing up length and width changes quotes and fit.
Citable Sources
- FEFCO box dimension conventions
- Carrier packaging measurement guides
One-Sentence Summary
Measure a corrugated box inside as Length × Width × Depth, with length the longer opening side, width the shorter, and depth the height.