Container Stuffing Utilization Calculator

What's a good utilization target for container loading?

Well-optimized loads hit 85-95% on whichever dimension binds first (cube or weight). Below 75% on both usually signals an opportunity to consolidate with another shipment, use better dunnage to allow tighter stacking, or move to a smaller container size and save the per-container ocean freight cost entirely.

Why would a load be weight-constrained instead of cube-constrained?

Dense cargo like machinery, canned goods, or metal parts hits the legal road weight limit for the container and chassis before filling the physical volume, leaving visible empty space in the container that can't be used because adding more weight would violate axle weight regulations for the trucking leg.

How does container choice affect this?

A 40ft high cube adds roughly 300 cubic feet over a standard 40ft container for a similar or lower payload limit, which helps cube-bound loads (bulky, lightweight goods) but does nothing for weight-bound loads. If your cargo is dense and weight-bound, paying extra for a high cube container is wasted money — a standard container or even a 20ft unit split across two containers might be the better call.

Does this account for load planning software optimization?

No, this gives a theoretical utilization ceiling based on total volume divided by container capacity, assuming perfect packing. Real-world stuffing with irregular carton sizes, required dunnage, and stability requirements for ocean transit typically achieves 80-90% of this theoretical number, so treat this as an upper bound rather than a guarantee.