Chargeable weight is the figure your freight carrier uses to price your shipment — whichever is greater: the actual gross weight or the volumetric (dimensional) weight. For lightweight but bulky goods, volumetric weight almost always wins, and that’s where shipping costs can catch importers off guard. Enter your shipment details below to find out which applies to you.
Chargeable weight is the greater of the actual weight and the volumetric weight.
Chargeable weight rates consider the higher value between the actual weight and the dimensional weight of your shipment. By understanding chargeable weight basics, you can ensure accurate cost estimation and optimal use of space. Calculating chargeable weight involves comparing the actual weight of your shipment with its dimensional weight, which is determined based on its volume. This concept is essential in the air freight industry due to limited space and higher operating costs.
To get started, you’ll need to take a few measurements of what you are sending.
Step 1: Measure the Dimensions of the Package
Use a ruler or tape measure to determine the width, height, and length of your package. Ensure you measure the package as it will be sent.
Step 2: Calculate the Volume of the Package
Multiply the width, height, and length to get the volume in cubic centimetres (cm³).
Formula: Volume = Width × Height × Length
Step 3: Calculate the Volumetric Weight
Divide the volume by 5000 to get the volumetric weight in kilograms (kg). This divisor is the IATA standard used worldwide in air freight.
Formula: Volumetric Weight (kg) = Volume (cm³) ÷ 5000
Step 4: Compare with Actual Weight
Compare the volumetric weight with the actual weight of the package. Use the higher value for shipping cost calculations.
Let’s say your package has the following dimensions:
Step 1: Measure the Dimensions
Width: 100 cm, Height: 100 cm, Length: 100 cm.
Step 2: Calculate the Volume
Volume = 100 cm × 100 cm × 100 cm = 1,000,000 cm³
Step 3: Calculate the Volumetric Weight
Volumetric Weight = 1,000,000 cm³ ÷ 5000 = 200 kg
Step 4: Compare with Actual Weight
Actual Weight: 100 kg. Volumetric Weight: 200 kg.
In this example, the volumetric weight (200 kg) is greater than the actual weight (100 kg), so the volumetric weight will be used for shipping cost calculations.
Aside from the volume and actual weight of your packages, you’ll also need to understand what other charges may influence your total shipment cost — and there are quite a few to consider. If your shipment consists of dangerous goods or hasn’t been packaged properly, you’ll likely incur more fees. We’ve made a brief list here for you to consider, but please tell us about your specifics so we can provide an accurate quote.
Air freight is a powerful option for some shipments and the wrong one for others. Here’s how it compares.
Carriers don’t just charge by the kilogram. A pallet of cushions weighs far less than a pallet of steel, but it takes up the same space on a plane or inside a container. Chargeable weight exists to balance this — ensuring carriers are fairly compensated for both weight and the space your cargo occupies.
Getting this number right before you ship helps you:
For complex shipments, multi-carton consignments, or consolidated cargo, our freight forwarding team can calculate the most cost-effective option for your goods.
Chargeable weight is the higher of the actual gross weight or the volumetric (dimensional) weight of a shipment. Freight carriers use this figure to calculate shipping charges, ensuring they are compensated for both the weight and the space your cargo occupies.
Chargeable weight determines your transportation cost. Lightweight but bulky shipments are charged by the space they occupy rather than their actual weight. Understanding chargeable weight before you ship helps you budget accurately and avoid surprise freight charges.
The air freight volumetric weight formula is: Length (cm) x Width (cm) x Height (cm) / 5000. This is the IATA standard used by airlines and air freight carriers worldwide.
The sea freight volumetric weight formula is: Length (cm) x Width (cm) x Height (cm) / 1000. This formula is used for LCL (less than container load) ocean freight shipments.
Actual weight is the physical weight of your shipment measured on a scale. Volumetric weight is a calculated figure based on the dimensions (length, width, height) of your package. The carrier charges based on whichever is higher.
To calculate chargeable weight: 1) Measure your package dimensions in centimetres. 2) Calculate volumetric weight using the appropriate formula (divide by 5000 for air freight or 1000 for sea freight). 3) Weigh your package to get the actual weight. 4) The chargeable weight is whichever figure is higher.
The most effective way to reduce chargeable weight is to minimise dead space in your packaging. Use boxes that fit your products snugly, avoid oversized cartons, and consider vacuum-packing soft goods. For regular shipments, ask your freight forwarder about consolidated shipping — combining your cargo with other shipments can reduce the per-unit volumetric cost significantly.
Yes. Chargeable weight applies in both directions — whether you’re importing goods into Australia or exporting to overseas markets. The same formula is used: carriers compare actual weight against volumetric weight and charge based on whichever is higher. This applies to air freight, sea freight (LCL), and most domestic transport services.
