Box Grid Capacity Calculator

Enter the box's usable inner dimensions, one item's dimensions and the gap between adjacent items to compare uniform grids.

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Usable inner box dimensions

Use the available space inside the box, not its outer dimensions.

Length (mm)

Width (mm)

Height (mm)

Single-item dimensions

Length, width and height swap between orientations. Each grid uses one orientation throughout.

Length (mm)

Width (mm)

Height (mm)

Dimensions: 0.01–100000.00 mm, at most two decimal places. Examples: 10, 10.5, 10.50. Use ASCII digits and a dot; no commas or spaces.

Gap between adjacent items (mm)

Range: 0–10000.00 mm. The gap applies only between adjacent items; no wall or floor clearance is added.

Allow rotation

Compare six orientations aligned to the box axes. This does not include tilting or arbitrary angles.

Inserts an ASCII dot in the most recently focused dimension or gap field.

Enter usable inner box dimensions and single-item dimensions, then calculate capacity.

Maximum uniform-grid count

items

Axis-aligned orientation comparison

L, W and H mean the item's original length, width and height, in order along the box's length, width and height axes. A base layer spans box length × width; layers run along box height.

Scroll this table horizontally. When focused, use the left and right arrow keys.

Uniform-grid counts and occupied dimensions for each orientation
Orientation	Along box length	Along box width	Along box height	Total items	Occupied dimensions (box length × width × height)

This estimates one uniform grid orientation. It does not optimize mixed arrangements or guarantee a physical fit.

Inputs are calculated on this page and are not saved. The site files must still load the first time.

Calculation and limits

Does this find the optimal 3D packing arrangement?

No. It compares one uniform grid for each listed axis-aligned orientation. It does not mix orientations or search remaining space.

Does rotation mean any angle is allowed?

No. It only permutes the item's length, width and height along the box axes. You must account for labels, fragility and shape constraints yourself.

How is the gap applied?

The gap is added only between adjacent items along each box axis. No clearance is added between an item and a box wall.

Does the result guarantee that everything will fit physically?

No. The calculation does not check shape, tolerances, flexible packaging, weight, handling room or box strength.