Cubic Weight

What is Cubic Volume of Freight?

When transport or courier companies transport goods they charge either Dead Weight or Cubic Weight.

Understanding Cubic Charges

The information listed below is to help you understand how cubic charges are made up and what formulas are used to calculate the cost.

About Cubic Freight

There are 2 ways a truck can measure the capacity it is carrying 

Dead Weight - The actual/real weight of the package 

Cubic Volume – The volume weight or the size of the package (A formula is used)

All the way through the transport industry, various cubic conversions are present. This usually depends on what form of transport mode is utilized by the consumer. 

Please see your rate schedule to see what conversion rate is relevant to you.


Standard cubic conversion is 1 cubic meter of space = 167kgs 

Standard cubic conversion is 1 cubic meter of space = 250kgs 

Standard cubic conversion is 1 cubic meter of space = 333kgs


Multiply the Height (H) x Length (L) x Width (W) = M3 (Cubic measurement) .CM X .CM X .CM =M3

To convert the cubic measurement to KG multiply the M3 amount by the applicable conversion rate.


Multiply the Height (H) x Length (L) x Width (W) = M3 (Cubic measurement)

Cubic Charges


Measuring Irregular /Odd Shapes

Setup the package in the position it will be weighed down. You can then measure by holding a straight edge at the right angles to the wall.

All parcels need to be cubed, whatever their shape.

For any parcel that is not square or rectangle, Measure the length, width and height of your item as if it were inside a box.

Then work out the cubic weight as we demonstrated above: Measure the height (A) x length (B) x width (C) in metres and multiply that by the cubic weight conversion factor. This may be 167, 250 or 333 depending on the carrier.

Measuring irregular odd shapes

Cubic Weight Calculation (for irregular shapes)

Multiply the Height (H) x Length (L) x Width (W) = M3 (Cubic measurement)

To convert this in to kilograms M3 (Cubic measurement) X by 250 (the standard cubic conversion)

Note- The standard cubic conversion may vary so please confirm with your carrier.


Measuring Cylinder Shapes

You can calculate the volume using the diameter as the length and width. To calculate the volume of a cylinder we need to know the radius of the circular cross-section of the cylinder.

You can get the dimensional weight of the cylinder by multiplying height X diameter X diameter

Measuring cylinder shapes

Cubic Weight Calculation (for cylinder shapes)

Multiply the Height (H) x diameter (D) x diameter (D) = M3 (Cubic measurement)

Note- The cylinder has the same dimensional weight as a box.


Cubic Metre Values

Cubic metre value is used by couriers to achieve a deadweight kilogram comparable to the cubic dimensions of the freight.

Based on the Courier the Cubic Metre values changeThe below table shows cubic metre values of individual couriers.

The below table shows cubic metre values of individual couriers

Courier Cubic Metre Values
TNT Australia Wide Service 250
TNT International Service 200
AaE 200


Keep in mind

If you cargo is on a pallet or a different sort of packaging you must include this in your cubic weight calculation as it forms part of the freight.

If the cargo is an unusual shape, the greatest points must be used. Calculate with an imaginary box around the item

Round up all kgs to the next denominator E.g. 40.3 kgs will be rounded up to 41 kgs

We at Couriers and Freight suggest that all dimensions and weights be calculated at your send out point and added to the consignment note if it can be done. Couriers and Freight employees are regularly asked to monitor both of daily and by load factors.

We hope that this information in this document will give you a better understanding when your freight is cubed.

If you have any concerns, doubts or anything else you need to clarify feel free to Contact Couriers and Freight for more information. Our well trained support staffs are ready to help you clear out all your questions and are waiting to hear from you.