How many 24 × 18 × 18 in boxes fit in a 20ft container?
24 × 18 × 18 in boxes of 610 × 457 × 457 mm (also called 4.5 cubic foot boxes, large moving boxes) in a 20-foot standard container (20GP) — inner dimensions 5,898 × 2,352 × 2,393 mm. Calculated by the Cubestow engine on 2026-09-08.
Boxes may be laid on any side. 91% of the space used, 8 layers high, about 3,792 kg (13% of payload). Open this load in the 3D planner →
Top view — floor layer (50 on the floor)
Side view — first row along the wall (8 layers)
The answer in detail
The large 4.5 cubic foot moving and shipping box.
The most common dry container for smaller export loads. Inner dimensions are typical for a steel ISO 20GP; individual boxes vary by a few centimetres, and the door opening (about 2,340 × 2,280 mm) is slightly smaller than the inside.
The simple grid estimate is 9 along the length × 5 across × 8 high = 360. The engine found 237 — 12 more than either uniform grid — by mixing orientations so that the leftover strip along the wall is used and by choosing the orientation that gives the most layers. The top view above shows the pattern.
Variants
| Loading rule | Fits | Layers | Volume used | Total weight |
|---|---|---|---|---|
| Boxes may be laid on any side (headline figure) | 237 | 8 | 91% | 3,792 kg (13% of payload) |
| Boxes kept this-side-up (turned on the floor plane only) | 235 | 5 | 90% | 3,760 kg (13% of payload) |
How many 20ft containers for a given order?
| 24 × 18 × 18 in boxes | 100 | 250 | 500 | 1,000 | 2,500 | 5,000 |
|---|---|---|---|---|---|---|
| 20ft containers needed | 1 | 2 | 3 | 5 | 11 | 22 |
| Last one filled to | 42% | 5% | 11% | 22% | 55% | 10% |
Mixed cargo, different carton sizes or delivery stops? Plan the exact shipment in 3D — free, in the browser, nothing uploaded.
Frequently asked
How many 24 × 18 × 18 in boxes fit in a 20ft container?
237 24 × 18 × 18 in boxes of 610 × 457 × 457 mm fit in a 20ft container (inner dimensions 5,898 × 2,352 × 2,393 mm), boxes may be laid on any side. That uses 91% of the 33.2 m³ available and weighs about 3,792 kg.
What are the inner dimensions of a 20ft container?
Typical inner dimensions are 5,898 mm long, 2,352 mm wide and 2,393 mm high (232.2 × 92.6 × 94.2 in), giving 33.2 m³ of space and a rated payload of about 28,200 kg. Individual units vary by a few centimetres, so check the actual box for tight loads.
How much does a full load of 24 × 18 × 18 in boxes weigh?
237 × 16 kg ≈ 3,792 kg, which is 13% of the 28,200 kg payload — so this load is limited by space, not weight.
How was this number calculated?
By running the Cubestow 3D load-planning engine on the exact dimensions above, allowing all six orientations, stacking with at least 80% base support and the container's payload limit, then re-validating the plan for overlaps, support and weight. Real loads leave room for dunnage, door clearance and uneven cartons, so treat the figure as the practical maximum.