Container Load Planner

How to Use This Tool

Start by selecting your shipping container type from the dropdown menu. Standard options auto-fill dimensions and weight limits, or choose Custom to enter your own container measurements.

Select your preferred dimension and weight units using the unit selectors to match your existing product or shipping records.

Enter your product’s individual length, width, height, and weight. Choose a packing method: loose (unpalletized), standard pallet sizes, or custom pallets if you use non-standard shipping pallets.

Set the maximum number of stacking layers your products can safely support to avoid damage during transit. Click Calculate to see your load plan, or Reset to clear all inputs.

Use the Copy Results button to save your load plan to your clipboard for sharing with freight forwarders or warehouse teams.

Formula and Logic

This tool uses three core constraints to calculate maximum load capacity, taking the lowest value across all three as the final units that fit:

• Volumetric Fit: Total container volume divided by individual product volume, adjusted for packing method.
• Dimension Fit: Number of products that fit along the length, width, and height of the container, accounting for pallet sizes and stacking limits.
• Weight Fit: Maximum container payload divided by individual product weight, to avoid exceeding freight weight limits.

All inputs are converted to standard metric units (centimeters, kilograms) for calculation, then converted back to your selected display units for results.

Practical Notes

• Standard container dimensions and weight limits follow ISO 668 shipping container specifications. Always verify with your freight carrier for exact limits, as some carriers have stricter weight restrictions for specific routes.
• For palletized shipments, factor in pallet weight (typically 15–25kg per standard pallet) when calculating total load weight, as this tool only accounts for product weight by default.
• Stacking limits should reflect product fragility: fragile items like electronics or glassware should use 1–2 layers, while durable items like clothing or non-perishable goods can use 3+ layers.
• Container door clearance is not included in calculations: standard container doors are 2.3m tall, so products taller than this will not fit even if the container interior height allows it.
• Use this tool to compare shipping costs: higher utilization rates reduce cost per unit shipped, helping you negotiate better freight rates with carriers.

Why This Tool Is Useful

Small business owners and e-commerce sellers often overpay for shipping by underutilizing container space, or face delays when containers exceed weight limits at port. This tool eliminates guesswork by giving you a data-backed estimate of how many units fit in a container before you book freight.

It helps you avoid costly mistakes like booking a 40ft container when a 20ft would suffice, or rejecting orders because you miscalculate available space. Sales teams can use it to give accurate lead times to clients, and warehouse teams can use load plans to optimize picking and packing workflows.

Frequently Asked Questions

Can I use this tool for LCL (Less than Container Load) shipments?

Yes, but LCL shipments share container space with other cargo, so your actual available space may be 10–20% less than the total container volume calculated here. Contact your freight forwarder for exact LCL allocation.

How do I account for packaging materials like bubble wrap or boxes?

Enter your product dimensions including all final packaging (boxed product size, not raw product size) to get an accurate fit. This ensures you account for all space taken up by your goods in transit.

Why does the tool show a lower number of units than I expected?

The tool uses the most restrictive constraint (volume, dimension, or weight) to calculate load size. For example, if your products are light but bulky, volume will limit the load; if they are heavy but small, weight will limit the load.

Additional Guidance

• Always add a 5–10% buffer to your load plan to account for irregular product shapes or packing gaps that the tool’s rectangular calculation does not factor in.
• For international shipments, check destination country weight limits: some countries have lower road weight limits than ISO container maximums, which may further restrict your load.
• Save load plans for repeat products to speed up future freight bookings, and update them if you change product packaging or pallet suppliers.
• Pair this tool with a freight rate calculator to calculate total shipping costs per unit, helping you set accurate product pricing for international markets.