How Many Cartons Fit in a Container? Worked Example

Start with carton and internal dimensions

Assume a carton is 60 × 40 × 40 cm and a planning container interior is approximately 590 × 235 × 239 cm. One simple orientation fits floor(590÷60) × floor(235÷40) × floor(239÷40), or 9 × 5 × 5 = 225 cartons.

Rotating the carton can produce a different result, so a container calculator should test all six axis-aligned orientations and keep the best feasible count.

Compare with volume-only math

The carton occupies 0.096 CBM. Dividing a nominal 33 CBM container by 0.096 suggests more than 340 cartons, which is far above the simple geometric fit because it assumes every gap can be used.

This demonstrates why CBM division is an upper-bound intuition, not a loading plan.

Then apply real constraints

Check gross cargo weight, door opening, bracing, floor loading and unload sequence. Mixed SKUs require a more detailed plan than a uniform-box example.

Verify dimensions for the actual container supplied because fleet equipment varies.

Reconcile the guide with the calculator preset

The calculator uses 589 × 235 × 239 cm for its 20 ft planning preset, rather than the rounded 590 cm length above. With 60 × 40 × 40 cm cartons, the best of all six uniform rotations is still 225. The precise rectangular-volume upper bound for that preset is floor(33.081185/0.096) = 344 cartons.

The more detailed 20 ft guide uses a separately sourced Hapag-Lloyd equipment example and shows door clearance and a weight check. Do not combine an interior from one equipment sheet with a payload or door height from another without labeling the assumptions.

• Full 20 ft loading worksheet