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Are you utilizing the full capacity of your pallets and containers?

A 3D packing calculator for shipping containers and pallets. Compare three algorithms, mix orientations, and export the exact stacking plan — all in your browser.

Three modes, one calculator

Live examples — each visualization is interactive

Container mode
Drag to rotate

Axes

HWL
Upright
Side
Container
1,200 × 800 × 1,100 mm
Box
400 × 300 × 250 mm
Result
33 boxes, mixed orientations
Pallet mode
Drag to rotate

Axes

HWL
Side
Side Rotated
Pallet
EUR 2 / Industrial 1,200 × 1,000 mm (144 mm tare)
Box
427 × 337 × 295 mm (custom)
Orientation
Side only
Result
40 boxes, 80.6% utilization
Pallet-in-Container
Drag to rotate

Axes

HWL
Flat Rotated
Flat
Container
20' (5,898 × 2,352 × 2,385 mm)
Pallets
Australian Standard 1,165 × 1,165 mm (150 mm tare)
Box
600 × 400 × 300 mm (half module)
Result
280 boxes on 10 pallets (28 per pallet)

Container loading

Presets for 20', 40', 45' high-cube, 48', and 53' containers — or enter custom dimensions in mm, cm, or meters.

Pallet stacking

Eight regional pallet presets (EUR, GMA, Australian, Asian), with load-height caps and tare height support.

Layer-by-layer plan

Stacking instructions per layer, mixed orientations, and CSV export so your warehouse team can follow the plan.

Three algorithms, side by side

BoxFit runs your problem through three different packers in parallel so you can see the gap between naive and smart.

Basic

Single-orientation grid. The baseline anyone can do by hand — a sanity check.

Intermediate

Layer-by-layer 2D guillotine. Each layer is self-contained — ideal for automated unloading.

Efficient

Full 3D guillotine with mixed orientations. Typically 5–20% more boxes than Basic.

Whom is BoxFit for?

Freight forwarders

Quoting container loads for clients with mixed box sizes

Warehouse managers

Planning pallet stacks that fit under door and truck clearances

Transportation managers

Estimating the number of pallets needed for a single-SKU order before booking trucks

E-commerce operations

Deciding whether one big order ships as one container or two pallets

Procurement teams

Verifying supplier capacity claims before committing to PO volumes

Run your first calculation

Enter your box and container dimensions. Get three algorithm results, a 3D view, and a downloadable stacking plan — in seconds.

Open the Calculator
BoxFit.spaceShipping Box Calculator

© 2026 BoxFit.space. All rights reserved.

Optimize your container loading efficiency with precision calculations. Created by J. Atzert

Disclaimer: BoxFit.space is provided free of charge, "as is", with no warranty of any kind. While our algorithms aim for high packing efficiency, a 100% optimal solution is not always achievable, and results should be verified against real-world constraints (load weights, fragility, customs, vehicle restrictions, etc.) before being used for shipping decisions. The author and operator of BoxFit.space accept no responsibility for any losses, damages, delays, or other issues arising from use of this tool.