Chargeable Weight • Air Freight • Volumetric Weight • Rates • 1:6000
Chargeable weight: don't pay for air unnecessarily
In air freight you pay not only for weight, but also for volume. And that is where it often goes wrong. Chargeable weight ultimately determines your rate — and it regularly turns out higher than expected. Whoever knows the calculation can steer it; whoever ignores it discovers it on the invoice.
In short: what is chargeable weight?
Chargeable weight is the weight on which the air freight rate is calculated: the higher of the actual weight and the volumetric weight. In air freight, the volumetric weight is usually calculated as length × width × height in centimetres, divided by 6000. As a result, 1 m³ counts as roughly 167 kilos. Large, light shipments take up a lot of space and are therefore charged as heavier than they weigh.
Chargeable weight is a core concept within air freight, alongside topics such as urgent shipments and dangerous goods. The declared weights and dimensions appear on the Air Waybill and must match the commercial invoice and packing list for the customs handling of import and export shipments. And sometimes the outcome of the calculation is a reason to reconsider the mode: for voluminous, non-urgent cargo, sea freight is often far more economical.
Why chargeable weight is so decisive for your rate
In an aircraft, space is at least as scarce as payload. A hold full of boxes of feathers is full long before it is heavy — which is why the air cargo industry calculates with volumetric weight. On top of that, demand for air cargo reached record volumes in 2025: capacity is in demand, so every cubic metre on board has value.
For you as a shipper, that means an incorrect estimate of weight and dimensions leads to surprises on the invoice. Especially in air freight, those differences can add up considerably — a few extra centimetres of packaging work through in three dimensions and can already affect the price.
With a correct calculation in advance you know exactly where you stand: no recalculations, no discussions afterwards, and the ability to steer before booking — on packaging, number of packages or even the choice of mode. Transparent, honest and with no air in the price.
What companies often get wrong about chargeable weight
The first misconception: "you simply pay per kilo on the scale." In air freight, the higher of two weights counts: the actual weight or the volumetric weight. Light but voluminous cargo — cushions, insulation material, empty packaging, plastic parts — is almost always charged on volume, and that can be a multiple of what the scale shows.
The second misconception: "a few centimetres of packaging make no difference." The divisor in the calculation is 6000, and every extra centimetre counts in three directions. An oversized box, an overhanging pallet or wasted filler directly increases the volumetric weight. Smarter packing — fitting boxes, stackable packages, compressed products — lowers the chargeable weight and thus the invoice.
The third misconception: "chargeable weight is the same everywhere." The conversion factor differs per mode of transport. Air freight usually calculates at 1:6000 (1 m³ ≈ 167 kg), express carriers often at 1:5000 (1 m³ = 200 kg), and sea freight and road transport have their own volume rules. Anyone comparing multiple quotes must first know which factor is being used — otherwise you are comparing apples with oranges.
Practical example
A Rotterdam web shop wants to send a pallet of cushions by air freight to a customer in Dubai. The pallet measures 120 × 100 × 160 cm and actually weighs 180 kg. The calculation: 120 × 100 × 160 = 1,920,000 cm³, divided by 6000 = 320 kg volumetric weight. Because 320 kg is higher than 180 kg, the shipment is charged at 320 kg. TOP calculates this in advance and advises vacuum-packing the cushions and stacking them lower: the height drops to 110 cm, the volumetric weight to 220 kg — over 30% saved on the rate, without leaving a single cushion behind.
Actual or volumetric weight: which one counts for your shipment?
The chargeable weight is always the higher of these two. Below they are set out side by side.
Chargeable weight in numbers: sources and methodology
The facts below come from IATA and Schiphol, and were verified for this page in August 2026.
33% of world trade by value — Air cargo carries over 8 trillion dollars' worth of goods worldwide: about 33% of world trade by value, while being only a fraction in weight. What travels by air is above all valuable and often light cargo — precisely why the industry calculates with volume as well as weight.
Source: IATA, value of air cargo
Record demand for air cargo — Global air cargo demand grew by 3.4% in 2025 compared to 2024, reaching record volumes. Hold space is therefore a scarce commodity: every cubic metre on board represents value, and that is reflected in the volume component of the rate.
Source: IATA, air cargo demand 2025
Schiphol: 1.43 million tonnes and 300 destinations — Schiphol handled around 1.43 million tonnes of air cargo in 2025 and connected the Netherlands with 300 destinations on five continents. Behind every one of those tonnes lies the same calculation: the chargeable weight determines what the shipper pays for its place on board.
Source: Schiphol, annual traffic review
How TOP handles chargeable weight for you in practice
TOP calculates the chargeable weight for you in advance, based on the actual dimensions and weights per package. That way you know exactly what the shipment will cost before booking — and where there is room to save. Think of tighter packing, different stacking or combining packages, exactly as in the calculation example above.
If the outcome is high, TOP also advises on alternatives: for voluminous cargo without a hard deadline, sea freight can be considerably cheaper, while urgent shipments call for maximum speed instead. The declared weights and dimensions match the Air Waybill and the customs declarations, and you follow the status of your shipment in real time via the TOP platform with API integrations.
Want to know in advance what your shipment will really cost? Request a quote, prepare your shipment via book a shipment, or schedule an introduction with TOP.
Which companies is TOP suitable for?
TOP is suitable for companies shipping by air that want a grip on their rates. These can be SMEs and web shops that fly a pallet now and then, but also multinationals with weekly air freight flows where a few percent of volume gain per shipment adds up structurally.
Boards want predictable transport costs without surprises afterwards. Logistics managers want quotes that match the invoice. Finance and procurement want to compare rates on the same basis — and know where savings can be made. TOP understands that these interests come together in one thing: a calculation that is right up front.
That is why TOP works in an advisory and practical way. No unnecessary jargon, but clear explanations of weights, volumes and rates. For general developments in the transport sector, TOP also refers where relevant to industry information from Transport en Logistiek Nederland.
TOP is not a standard freight forwarder
TOP helps companies with a practical combination of customs matters, sea freight, air freight, intermodal transport, warehousing, rail and barge. This makes TOP particularly suitable for entrepreneurs and logistics teams who want understandable advice on importing, exporting and the cost of their shipments without complicated jargon. Its strength lies in organising, explaining and following up on the entire logistics chain — including the calculation behind the rate.
Frequently asked questions about chargeable weight
What is chargeable weight?
Chargeable weight is the weight on which the air freight rate is calculated: the higher of the actual weight and the volumetric weight of the shipment. Large, light shipments are therefore charged as heavier than they weigh.
How do you calculate the volumetric weight in air freight?
Length × width × height in centimetres, divided by 6000. A pallet of 120 × 100 × 160 cm therefore has a volumetric weight of 320 kg, regardless of what the scale shows. As a result, 1 m³ counts as roughly 167 kg.
Why do I pay for volume instead of weight?
Because in an aircraft, space is at least as scarce as payload. A hold full of light, voluminous cargo is full long before it is heavy; with the volumetric weight, the industry distributes the cost of that scarce space fairly across shipments.
Is the conversion factor the same everywhere?
No. Air freight usually calculates at 1:6000 (1 m³ ≈ 167 kg), express carriers often at 1:5000 (1 m³ = 200 kg), and sea freight and road transport apply their own volume rules. Always check the factor used when comparing quotes.
How can I reduce my chargeable weight?
By packing smarter: fitting boxes without wasted space, stacking lower, combining packages or compressing products (vacuum packing, for example). Every centimetre less works through in three dimensions in the calculation.
Does TOP calculate the chargeable weight in advance?
Yes. TOP calculates the chargeable weight before booking, advises on packaging and alternatives such as sea freight, and ensures the declared weights and dimensions are correct on the Air Waybill and in the customs declarations. No recalculations, no discussions.
Conclusion: whoever knows the calculation helps set the price
Chargeable weight is not small print but the core of every air freight rate: the higher of actual and volumetric weight determines what you pay. Whoever knows the 1:6000 calculation can steer in advance — on packaging, on stacking and sometimes on the choice of mode — instead of being startled by the invoice afterwards.
TOP calculates everything for you in advance — transparent, honest and with no air in the price.
Know in advance what your shipment costs
Want to know the chargeable weight of your shipment and where you can save? TOP is happy to calculate it for you.
Request a quoteWant to know more about Trans Ocean Pacific forwarding? Visit the TOP homepage.
Last updated: August 2026. Sources: IATA and Schiphol. Online findability and AI readiness of this page in collaboration with HEF Digital.