Storage capacity calculator

How much can this cabinet realistically hold?

Before you startMeasure the clear inside cabinet, then use a realistic packing factor rather than assuming every gap can be filled.

Step 1

Add your measurements

See gross and usable volume plus a rough number of reference boxes.

Example numbers are loaded

Replace each example with what you measured. The example result on the right updates as you type.

Measure inside the cabinetDo not use the outside product dimensions.

Inside widthcmMeasure clear inside from left to right.Inside heightcmMeasure clear inside from bottom to top.Inside depthcmMeasure clear inside from front to back with doors closed.

Set a real-world allowanceShelves, air gaps, and odd shapes reduce usable volume.

Usable volume factor%Estimate the percentage of the empty box that can actually be packed.Reference box volume in litersEnter the labeled volume of a box or bin you know.

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Example resultLooks good on paper

About 0.76 m3 of usable volume

Use object dimensions, not volume alone, for awkward or frequently accessed items.

Change the sample measurements to turn this into your estimate.

Gross volume: 1.08 m3
Usable estimate: 0.76 m3
Reference boxes: 18

Proportional planning schematic - verify all dimensions on site.

Before you buy or start work

Reserve eye-level space for frequent items.
Check shelf loads and door openings.
Leave ventilation around sensitive contents.

Method

What this result assumes

The usable-volume factor accounts for shelves, gaps, and irregular objects.

Volume does not represent accessibility or load capacity.

Limitations

What it cannot confirm

This is a planning estimate, not a building-code, safety, installation, or delivery guarantee.

Confirm product-specific requirements with the manufacturer, installer, retailer, or qualified trade.

Formula 1.0.0Reviewed 2026-07-13General planning assumptions

Read category methodology