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Packaging / Free interactive calculator

Products Per Carton Calculator

Calculate the maximum count of rectangular products that fit in a shipping carton in six axis-aligned orientations, with optional clearance around the inside walls.

▦ Your measurements

Adjust any value to calculate instantly. Or press Calculate to spotlight your result.

Subtracts this amount from both sides of each axis.
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A practical guide

How this calculator works

When products are sold by case, comparing six orientations gives a quick estimate of how many uniform units fit in a carton. You only need the internal carton measurements and external dimensions of one product.

What the calculation does

For each orientation, divide the box's usable internal length, width and height by the corresponding product dimensions, round down each axis, and multiply. The highest of the six same-orientation results is shown.

The basic formula
Units per orientation = floor(usable L ÷ unit L) × floor(usable W ÷ unit W) × floor(usable H ÷ unit H).

Important limitations

This tool checks uniform orthogonal grid packing only. Mixed orientations, nesting, dividers, cushioning and damage-prevention requirements can change the actual result.

Common questions

Should I enter inside or outside carton measurements?

Use internal carton dimensions. Outside measurements include corrugated board thickness and overstate usable packing space.

Does the tool combine different orientations?

No. It finds the best of six uniform orientations. Mixing orientations within one layer may improve utilization, but is not modeled.

How much clearance should I allow?

Enter the space reserved against each inner wall. Your product, protective wrap and handling requirements determine the appropriate value.

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