Shipment cube

CBM shipment volume calculator

Turn outside package dimensions and piece count into shipment cube. The calculator keeps the original dimensions visible and converts only for the result.

Browser-local calculation · no account · no data upload

Live worksheet

Enter shipment data

Values stay on this device. Required fields are marked required.

Planning note: Results are unrounded estimates unless shown otherwise. Verify dimensions, units, carrier rules, and operational constraints independently.

Procedure

How to use this tool

01
Enter the packed outside length, width, and height of one identical piece.
02
Choose the dimension unit and enter the number of pieces.
03
Review per-piece and total volume before copying figures to a quote or booking.

Useful for

Common planning tasks

Quoting LCL ocean freight
Checking total cube on a packing list
Comparing packed carton or crate options

Model boundary

Assumptions

Every piece entered has identical outside dimensions.
Dimensions describe the fully packed shipping unit.
The calculation uses rectangular bounding-box volume.

Operational caution

Limitations

Protrusions, nesting, unusable gaps, and carrier rounding rules are not modeled.
CBM alone does not determine chargeable weight, equipment fit, or freight price.

Reference

Questions and answers

How is CBM calculated?

Length × width × height is converted to cubic metres, then multiplied by the quantity.

Should I use inside or outside dimensions?

Use the packed outside dimensions because those describe the space the shipment occupies.

Does a carrier round CBM?

Often, but rules vary. Keep the unrounded result here and apply the carrier’s published rating rule separately.