Chargeable Weight Divisors by Shipping Mode
Carriers convert volume to weight using a divisor specific to each shipping mode. The resulting volumetric weight is then compared to actual weight — whichever is higher is what you're billed.
| Mode | Divisor | Example: 1 CBM = |
|---|
| Air freight | ÷ 6,000 | 167 kg volumetric |
| Sea LCL | ÷ 1,000 | 1,000 kg (1 W/M ton) |
| Courier (DHL/FedEx/UPS) | ÷ 5,000 | 200 kg volumetric |
How to Use This Calculator
- Select your shipping mode — air freight, sea LCL, or courier. This sets the correct divisor.
- Enter your carton dimensions — length, width, and height in your preferred unit.
- Enter the actual weight per piece and the quantity of pieces.
- Read your result — you'll see volumetric weight, actual weight, and the higher figure: your chargeable weight.
Use this number when quoting your client or estimating freight costs. If the chargeable weight is significantly higher than actual weight, consider repacking to reduce carton dimensions.
Why Chargeable Weight Catches Freight Coordinators Off Guard
When you get a packing list, the weight column shows actual gross weight. That's the number most people quote against. But for air freight, a 20 kg box measuring 80×60×60 cm has a volumetric weight of 48 kg — more than double. The carrier invoices 48 kg. Your client was quoted on 20 kg. The gap comes out of your margin or causes a dispute.
Always check chargeable weight before quoting. This tool does it in under 10 seconds.
Tips to Reduce Your Chargeable Weight Bill
- Reduce outer carton dimensions — even 5 cm less on each side saves meaningful volume across 100 pieces.
- Minimise void fill — excess packaging inflates dimensions without adding sellable weight.
- Consider sea LCL for bulky, lightweight cargo — the ÷1,000 divisor makes volumetric weight far less punishing.
- Consolidate shipments — fewer, denser pieces can shift the chargeable basis from volumetric to actual.
- Repack into master cartons — combining loose pieces reduces per-unit dimensional overhead.
Frequently Asked Questions
What is chargeable weight?
Chargeable weight is the weight your carrier bills you for. It is the higher of actual (gross) weight and volumetric (dimensional) weight. Carriers use this rule because large but light cargo takes up space that could otherwise carry heavier freight — so they charge for the space used, not just the physical mass.
What is the volumetric weight formula for air freight?
Volumetric weight for air freight = (L cm × W cm × H cm) ÷ 6,000. This is the IATA standard. For a single piece: multiply length × width × height in centimetres, then divide by 6,000. The result is in kilograms. Multiply by quantity for total volumetric weight.
Why is my carrier charging more than the actual weight?
Your cargo is volumetrically heavy — the dimensions produce a higher chargeable weight than the physical gross weight. This is typical for furniture, electronics in retail packaging, foam-packed goods, and any product where the box is large relative to what's inside. The carrier charges the volumetric weight in these cases because your cargo is consuming space, not just lifting capacity.
What divisor does DHL, FedEx or UPS use?
Most major couriers including DHL, FedEx and UPS use a divisor of 5,000. The formula is (L cm × W cm × H cm) ÷ 5,000. This is slightly more aggressive than air freight's ÷6,000, meaning the same box will produce a higher volumetric weight via courier than via air cargo. Always confirm the divisor with your specific courier contract, as some accounts have negotiated rates.
How do I reduce chargeable weight costs?
The most effective approach is reducing outer carton dimensions. Even shaving 3–4 cm from each side of a carton compounds significantly across 500 pieces. Beyond that: minimise internal void fill, consider sea LCL for large volumes (÷1,000 divisor is far less punishing), consolidate shipments into master cartons, and repack loose retail-packaged goods where possible.
Does chargeable weight apply to sea freight FCL?
No. For full container load (FCL) shipments, you pay a flat container rate regardless of weight or CBM (up to the container's payload limit). Chargeable weight applies to air freight, sea LCL (charged per weight/measurement ton), and courier shipments where carriers price by the piece or shipment total.