Tutorials & Solutions

Calculating the Cubic Weight Factor

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The cubic factor is used to calculate a new weight for a package. This new weight will take into consideration, besides the weight of the products, their volume. This is necessary so that the price to be charged for freight is in a fair ratio between weight and occupied volume.


The cubage is the relationship between the volume and weight of the goods, which is measured by a mathematical calculation that verifies in what proportion the cargo will match in weight to the volume it occupies in the vehicle. The function of cubage in transport is to avoid filling the entire physical space of the vehicle without using all its capacity in terms of weight or vice versa. Thus, the concept is linked to the ability to complete the loading of a vehicle using its entire volume available for load and weight or tonnage capacity.

  • Real weight: is the one indicated on the scale.
  • Cubed Weight: is the calculation that determines the actual space occupied by the package on the vehicle.

Cubic Factor

Is the resulting coefficient of the relationship between weight and volume that is more suitable and commercially fair to aircraft cubage, as recommended by IATA (international organization that congregates all airlines).

The calculation

Calculation is performed by multiplying Length x Width x Height, and dividing by the cubic factor provided by the carrier. Ex.:

  • Package size: 50cm x 15cm x 60cm
  • Actual package weight: 9kg
  • Cubic factor: 6.000
  • Cubed Weight = 50cm*60cm*15cm/6.000= 7,5kg

By comparing the real weight to the cubed weight of the package, the carrier will charge for the actual weight, because it is larger than the cubed weight.

However, the calculation above is merely illustrative. For the carrier, the value registered as cubic factor will be multiplied to the result of Length x Width x Height. Which means the calculation is Length x Width x Height x Cubic Factor.

That is, if the value offered by your carrier is something like 6,000, you must perform the division by 1000. Ex .: 1.000 / 6.000 = 0,167

Therefore, the final calculation will be:

  • Package size: 50cm x 60cm x 15cm
  • Actual package weight: 9kg
  • Cubed Weight = 50cm x 60cm x 15cm x 0,167= 7,5kg

Check with your carrier if the unit of measure is in grams, which is the unit used by VTEX.

On the registration of your carrier, this is the value you must fill out the Cubic Weight Factor field with.

Cubic Weight

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