Free 3D Container Loading, Truck & Cargo Load Planner
StackLogic is an industrial-grade, browser-based 3D bin packing calculator designed for freight forwarders, logistics managers, export coordinators, and warehouse operators. Calculate exact box placement, maximize usable volumetric space, and ensure axle weight compliance across 20ft, 40ft, and 40ft High Cube shipping containers, commercial trucks, and flatbed trailers.
Unlike basic 2D packing calculators, StackLogic models physical cargo dimensions, sequence loading priorities, and package fragility in a real-time three-dimensional physics space. Simultaneously balance longitudinal Center of Gravity (CoG) to eliminate vehicle fishtailing, prevent heavy axle violations, and safeguard ocean vessels against dangerous cargo shifting in rough seas.
Interactive 3D Container Visualizer
Pack containers, balance weight distribution, and export manifests.
Open 3D PlannerVolumetric Space Optimization
Heuristic 3D bin packing maximizes usable cubic capacity while respecting stacking rules, orientation limits, and fragile goods.
Center of Gravity Balancing
Live calculated Center of Gravity (CoG) offsets guarantee compliant axle weight distribution across tractor-trailers and ocean containers.
PDF Manifests & Share Links
Export professional loading manifests for warehouse crews and share exact loading configurations with colleagues using one-click URL links.
Container Loading & Freight Optimization Guides
In-depth guides, dimension references, and practical engineering tutorials for logistics professionals.
20ft vs 40ft vs 40ft High Cube Container Comparison
Compare 20ft, 40ft, and 40HC shipping containers by volume, payload weight, freight rates, and ideal cargo types for optimal shipping ROI.
CBM Calculator & Guide: How to Calculate Cargo Volume in Cubic Meters
Learn how to calculate CBM (cubic meters) for sea freight shipments with formulas, dimensional weight rules, and an interactive cargo calculator.
Shipping Container Weight Limits: Tare, Payload & SOLAS Regulations
Understand tare weight, maximum gross weight, net payload capacities, road transport axle limits, and SOLAS VGM rules for shipping containers.
Flatbed Truck Loading: Axle Weight Distribution & Cargo Securement
Master commercial flatbed trailer load distribution, center of gravity balancing, DOT axle weight limits, and cargo tie-down securement.
How Much Furniture Can You Fit in a 20ft Shipping Container?
Discover exactly how much furniture and household cargo fits in a standard 20ft shipping container, with room-by-room breakdowns and loading strategies.
LCL vs FCL Ocean Freight: How to Choose the Right Shipping Mode
Compare Less than Container Load (LCL) and Full Container Load (FCL) sea freight shipping by transit time, cubic meter cost, and risk factors.
How to Load a Shipping Container for Moving Abroad
Master the art of loading a sea container for an international relocation with practical packing order, weight distribution, and cargo securing tips.
How Many Pallets Fit in a 20ft and 40ft Shipping Container?
Calculate standard Euro and US pallet capacities for 20ft, 40ft, and 40ft High Cube shipping containers with layout stacking rules.
Securing Cargo in Shipping Containers: Straps, Load Bars & Dunnage
Comprehensive guide to cargo securing inside shipping containers using ratchet lashing straps, shoring load bars, friction mats, and dunnage air bags.
Standard Shipping Container Dimensions & Capacity Reference
Detailed interior, exterior, door opening dimensions and volume capacities for 20ft, 40ft, and 40ft High Cube intermodal shipping containers.
StackLogic gives estimates only. Results are planning guidance and may not reflect real loading conditions, weight limits, regulations or carrier rules. Always verify dimensions, weights and the loading plan with your freight forwarder or carrier before shipping. Use at your own risk; no warranty is given. Some links are affiliate links; we may earn a commission at no cost to you.