A 40 ft high cube container typically holds roughly 8,000 to 12,000 standard FIBCs, with the exact number depending on fabric weight, bag size, whether a liner is fitted and how tightly the bales are compressed. A 20 ft container holds well under half of that, and PP woven sacks go in far greater numbers, usually in the hundreds of thousands, because each sack is small and light.
These are planning figures, not promises. The only reliable number comes from the plant's own loading calculation for your specific bag, so ask for it before you fix the order quantity.
What changes the count
- Fabric weight: a bag made from heavier fabric takes more volume per bale than a light fabric bag, so fewer fit in the same container.
- Bag size: a tall 1,000 kg bag has more fabric than a compact 500 kg bag, and larger bags with heavier loops take still more space.
- Coating and liners: laminated fabric does not compress as well as uncoated fabric, and a polythene liner adds bulk to every bag.
- Baffles and extra features: internal baffles, document pockets, discharge spouts with closures and heavy printing all add material.
- Bale compression and pallets: a well-compressed loose-loaded container carries more bags than a palletised one, since pallets consume floor space and limit stacking height.
Working out the order quantity
The sensible approach is to decide the bag specification first and then ask two or three plants how many of that exact bag they can load in a 40 ft high cube. The answers should be close to each other. If one plant's figure is far higher than the others, either the bale compression is more aggressive or the figure is optimistic, and both are worth a question.
Weight is rarely the limit for FIBCs. A full container of jumbo bags is usually well within the road and sea weight limits, so the volume is what you are paying for. That is why fitting a few hundred more bags by improving compression can make a visible difference to the landed cost per bag.
Mixing bag types in one container
Many buyers order two or three bag designs in a single container to spread the freight across the range. This works well provided each design is baled separately, the bales are clearly labelled and the packing list shows the sequence in which the bales were loaded. Mixed loads take slightly more space than a single design because bales of different sizes do not stack as neatly.
What Creston & Co does
We get loading calculations from each shortlisted plant and compare them side by side before you commit to a quantity. On the day of stuffing we are at the plant to count bales, check labelling and confirm the container and seal numbers, and we send you the photographs and a short report that evening. We can also look at your current bag specification and container loading in a free 20-minute sourcing review.