CBM calculator

Calculate cubic metres for one carton or a mixed shipment. Work in cm, mm, metres or inches.

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CBM calculator

Enter the outside dimensions of each carton.

Example values · ready to edit

Carton type 1

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How to calculate CBM

CBM means cubic metres: the volume occupied by your shipment. Use the packed outer dimensions, including any packaging that extends beyond the carton.

Length × width × height × cartonsDimensions converted to metres first

Example: 60 × 40 × 40 cm × 12 cartons = 1.152 m³. For mixed cartons, calculate each type and add the volumes.

Before you quote freight

Is CBM the same as chargeable weight?

No. CBM measures volume. A carrier may charge by gross weight, volumetric weight or minimum shipment rules. Confirm their divisor and rounding rules separately.

Does this predict container capacity?

It adds geometric volume only. It does not account for stacking, load restraints, carton rotation, access space or safe load limits.

How are values rounded?

Displayed values use up to six decimal places. A non-zero result smaller than 0.000001 is shown in scientific notation. Calculations use the unrounded values.

Worked example

Illustrative inputs and outputs to help you check your own task.

Six large cartons

Inputs
Select cm. Enter 80 × 50 × 40 and 6 cartons.
Output
0.96 m³ for the shipment; 0.16 m³ per carton.

Use the outside packed dimensions rather than the product dimensions inside the carton.

A shipment with two carton sizes

Inputs
In cm, enter 40 × 30 × 30 for 10 cartons. Add a second type: 60 × 40 × 40 for 5 cartons.
Output
0.36 + 0.48 = 0.84 m³ across 15 cartons.

The CSV keeps each carton type on its own row so you can check the dimensions behind the total.

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