Instant capacity estimates
Enter item dimensions and quantities once to see how each standard container size performs. Know whether 20ft, 40ft, or high cube space is required before you book.
Container loading calculator
Calculate capacity before you book a box
The JustLoad.it calculator estimates CBM, utilization, and optimal packing sequences in seconds. Stay within budget and communicate the plan clearly with your partners.
When to use a container loading calculator
Weight compliance checks
Track total shipment weight and compare it to container limits automatically. JustLoad.it flags overweight loads and heavy-on-light stacks before the dock finds them.
Standard vs. custom containers
Evaluate ISO containers or plug in your own dimensions. Toggle between options without rebuilding spreadsheets or retyping item data.
How to get accurate results
- Record length, width, height, quantity, and weight for every item so utilization and weight alerts stay accurate.
- Use accurate container dimensions when comparing options to ensure realistic capacity estimates.
- Set stacking and orientation preferences for each item to get the most accurate placement calculations.
- Save each simulation to your dashboard so you can revisit it and reference the results for future shipments.
How JustLoad.it elevates your calculations
Automatic utilization math
See utilization %, placed item counts, and unplaced leftovers for every container option without touching a spreadsheet.
Container library plus custom sizes
Start with built-in ISO dimensions, then add your own measurements and reuse them whenever needed.
3D preview and saved history
Review an interactive 3D load view, then store the simulation in your dashboard so you can revisit results or build the next shipment faster.
Use the calculator today
Pick the plan that fits your volume, checkout, and start running real capacity scenarios inside JustLoad.it immediately.