Length weight calculation (window)

Last updated: 29 June 2026

Settings > Weight calculation > next to the drop-down menu Length weight calculation.

In this window, you can set the rules that apply to weight calculations for long goods.

General

Function

Description

Name

Used for identification. The name is shown in the list on the left when a new configuration is saved.

Description

Free text field for internal notes. The description is not displayed anywhere else but here.

Calculate length weight only if stackable

Do not calculate length weight if stackable

These settings allow you to define what you mean by ‘stackable’ in your business. Whether or not stackable packages should be regarded as long goods. This, in turn, depends on what you define as ‘long goods’ and how you price them.

+ : All parcels that meet the criteria below are regarded as bulky goods. The tick box Stackable on the consignment line is irrelevant.

+ : Parcels that meet the criteria below and are stackable and are regarded as long goods.

+ : Parcels that meet the criteria below and not are stackable and are regarded as long goods.

+ : This cannot be configured, as the settings would otherwise contradict each other.

Minimum

Function

Description

Lowest length for length weight calculation

Enter the minimum length of the package for the long goods weight calculation to be performed. If the parcel is shorter than the specified minimum length, no length weight will be calculated for the parcel.

Lowest length weight

Enter the minimum length weight that this calculation can return.

Example: If you have entered 35 kg in the field, and if the total result of the long goods weight calculation is 22 kg (i.e. less than 35 kg), 35 kg is used as the result of the long goods weight calculation.

Maximum

Function

Description

Maximum length

Maximum width

Maximum height

Enter the maximum length, width and height of the consignment so that the weight of the long goods can be calculated.

Maximum total height for delivery

Enter the maximum total height of the order for the long goods weight calculation to be performed.

Multiple package settings

Select how to perform the long goods weight calculation if the order contains more than one parcel.

Function

Description

Length to use

Maximum: Use the length of the longest package when calculating the long goods weight.

Sum from all packages: Use the sum of the lengths of all packages as the "length" for the long goods weight calculation.

If you choose Sum from all packages, we recommend that you select Maximum for Width to use (see below).

Individual: Use the length of each individual parcel.

The length weight is calculated separately for each package, then these separate length weights are totalled.

Width to use

Maximum: Use the width of the widest package for the long goods weight calculation.

Sum from all packages: Use the sum of the widths of all packages as the "width" for the long goods weight calculation.

Individual: Use the width of each individual parcel.

The length weight is calculated separately for each package, then these separate length weights are totalled.

Rules

In the table, enter the rules that will apply to the long goods weight calculation. Enter one line per row.

In the first four columns (Width, Height, Length and Weight) you indicate which conditions apply. On each line, you can enter one or more terms, for example Width and Height, or just Width.

In the next two columns (kg/m and Fixed weigth), enter the result you want. Choose whether to use a fixed length weight (Fixed weigth) for a row, or whether to use a factor (kg/m) to multiply the number of metres by. For more information and examples, see Setting up weight calculation for long goods.

Opter checks the rules from the top down in the table, so it is important that you place the rules in the correct order. You can use and to move the rows up and down.

Function

Description

Width

Height

Length

Weight

Enter the dimensions for width, height and length in metres (m). Weight specifications are given in kilograms (kg).

Example: If you enter “1.61” in column Width, Opter will check whether the width of the package is 1.61 metres or more. If this is the case, Opter uses the factor in column kg/m or the value in column Fixed weigth during the weight calculation. If the width of the parcel not is 1.61 metres or more, Opter moves on to check the next row in the table.

kg/m

Please specify which factor you wish to use for calculating the weight of long goods. In other words, state how many kilograms a metre should be equivalent to.

Fixed weigth

Enter the length weight of the goods you want the rules in the row to produce. Enter Fixed weigth in kilograms (kg). Enter Fixed weigth or kg/m.

Moves the rows up or down. Opter checks the rules from the top down in the table. You can use the arrow buttons to move a row up or down, so that you get the rules in the order you want.

Deletes the line.

See also