Field note5 min read
How Many Items Fit in a Box?
Dividing box volume by item volume is only an upper bound; the dimensions of the grid decide the real count.
Calculate a grid, not a volume ratio
Each axis must fit a whole number of items. Leftover space on one axis cannot always be transferred to another, which is why a simple volume ratio can overstate the count.
FORMULA
Fit = floor(Box L ÷ Item L) × floor(Box W ÷ Item W) × floor(Box H ÷ Item H)
Test all six orientations
A rectangular item can be assigned to the box axes in six axis-aligned ways. The best orientation is the feasible grid with the largest count, subject to any “this side up,” fragility, or presentation constraint.
Allow for real packaging
- •Subtract dividers, liners, and padding from usable box dimensions.
- •Allow insertion clearance and manufacturing tolerance.
- •Do not assume products can nest or compress.
- •Validate the calculated pattern with a physical pack-out.