Void Fill Volume Calculator

Work out void fill volume instantly with clear inputs, formula shown and shareable results.

About Void Fill Volume Calculator

Void volume is carton internal volume less product volume, and it costs twice: once for the void fill material and again in dimensional-weight freight charges. Void above about 40% of the carton usually means the box range needs an extra size rather than more air pillows.

Formula

Void volume

Void per carton = carton internal volume - product volume; monthly = void x shipments

Worked example

With the default values below, Void Fill Volume Calculator returns Void Volume Per Carton of 0.012000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Carton Internal Volumeminimum 0 m3: 0.024 m3
Product Volumeminimum 0 m3: 0.012 m3
Shipments Per Monthminimum 1: 4,000
Void Fill Costminimum 0 per m3: 900 per m3

Results

Void Volume Per Carton: 0.012000
Monthly Void Volume: 48.000
Monthly Void Fill Cost: $43,200.00
Void As % Of Carton: 50.00%

Step by step

1Values used
2Void volume
3Void Volume Per Carton= 0.012000
4Monthly Void Volume= 48.000
5Monthly Void Fill Cost= 43,200.00
6Void As % Of Carton= 50.00

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 6 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Is void fill or right-sizing cheaper?

Right-sizing almost always wins once dimensional-weight freight is included. Void fill is a remedy for a box range that is too coarse.

How much void is acceptable?

Enough to allow 25-50 mm of cushioning around fragile items, and near zero for robust products. A carton more than half empty is a specification failure, not a packing problem.