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CPP Packaging Knowledge Center — Guide 05

Case Cube
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Enter your item dimensions and pack quantity to find the tightest-fitting case size — less void fill, smaller cube, and a lower freight class.

InstantBest-fit case size
Auto-PackRow × column × layer search
Void FillWasted space estimate
Updated2026
01

Find your tightest case size

Enter one item's outer dimensions, how many go in a case, and how much clearance you want per side (for padding, insert material, or fit tolerance). The calculator checks every valid row × column × layer arrangement for that quantity and picks the one with the smallest total volume.

in
in
in
units
in

Optional — compare against a case you're currently using:

in
in
in
Recommended Case
—
L × W × H
Case Cube
—
cubic feet
Void Fill
—
wasted space
Cube Savings
—
vs. current case
Assumes items keep a fixed orientation (not rotated between length/width/height axes) and pack in a uniform grid — irregular shapes, blister packs, or non-rectangular items will fit differently. Use as a starting point, then confirm with a physical fit test.
02

Why case cube is a freight lever, not just a box choice

CONNECTS TO

An oversized case doesn't just cost more in board — it lowers your shipment's density, which can push you into a higher, more expensive freight class. Tightening case size is one of the few packaging changes that reduces cost in three places at once: less board per case, less void-fill material, and a lower freight class on the same product weight.

Run your finished case dimensions through the Freight Class & Density Calculator to see the downstream effect on your shipping rate.

Ready to spec a real case?

We'll build a die-line to your exact case dimensions, with the right ECT rating and flute for your product weight.

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