Express vs Air Freight Volumetric Weight Calculator
Courier (5000) against air cargo (6000) on the same cartons: how much lighter the shipment bills as freight, and when it starts to pay.
Updated · By Niraj Kumar · 8 sources
https://checkpre.com/logistics/express-vs-air-freight-volumetric-weight
Box
Measure the packed box at its widest points, bulges included. UPS, FedEx and USPS round every fractional inch up.
Parcels are rated box by box; freight on the whole shipment.
- DHL Express Worldwide
- 5 kg
- Divisor 5,000 · 2 kg over actual weight · DIM weight
- Air freight (IATA)
- 4 kg
- Divisor 6,000 · 1 kg over actual weight · DIM weight
Cut the height to 12.5 cm or less and DHL Express bills actual weight.
- 1USPS Ground Advantage÷ 1393.2 kg
- 2USPS Priority Mail÷ 1393.2 kg
- 3Canada Post Regular Parcel÷ 6,0004 kg
- 4Air freight (IATA)÷ 6,0004 kg
- 5UPS Worldwide Express÷ 5,0005 kg
- 6FedEx International Priority÷ 5,0005 kg
- 7DHL Express Worldwide÷ 5,0005 kg
- 8Parcelforce Worldwide globalpriority÷ 5,0005 kg
- 9Canada Post Xpresspost / Priority÷ 5,0005 kg
- 10UPS Ground÷ 1395.4 kg
- 11FedEx Ground÷ 1395.4 kg
- 12Australia Post Parcel Post÷ 4,0006 kg
- 13Road freight (LTL / groupage)÷ 3,0008 kg
- 14Sea freight (LCL)÷ 1,0001,000 kg
| Service | Divisor | DIM weight | Actual | Billable, shipment | Billed on |
|---|---|---|---|---|---|
| DHL Express Worldwide | 5,000 | 5 kg | 3 kg | 5 kg | DIM weight |
| Air freight (IATA) | 6,000 | 4 kg | 3 kg | 4 kg | DIM weight |
| USPS Ground Advantage | 139 | Exempt | 7 lb | 7 lb | Actual weight (DIM exempt) |
| USPS Priority Mail | 139 | Exempt | 7 lb | 7 lb | Actual weight (DIM exempt) |
| Canada Post Regular Parcel | 6,000 | 4 kg | 3 kg | 4 kg | DIM weight |
| UPS Worldwide Express | 5,000 | 5 kg | 3 kg | 5 kg | DIM weight |
| FedEx International Priority | 5,000 | 5 kg | 3 kg | 5 kg | DIM weight |
| Parcelforce Worldwide globalpriority | 5,000 | 5 kg | 3 kg | 5 kg | DIM weight |
| Canada Post Xpresspost / Priority | 5,000 | 5 kg | 3 kg | 5 kg | DIM weight |
| UPS Ground | 139 | 12 lb | 7 lb | 12 lb | DIM weight |
| FedEx Ground | 139 | 12 lb | 7 lb | 12 lb | DIM weight |
| Australia Post Parcel Post | 4,000 | 6 kg | 3 kg | 6 kg | DIM weight |
| Road freight (LTL / groupage) | 3,000 | 8 kg | 3 kg | 8 kg | DIM weight |
| Sea freight (LCL) | 1,000 | 24 kg | 3 kg | 1,000 kg | Tariff minimum |
How do carriers calculate dimensional weight?
Express couriers divide cubic centimetres by 5000; air cargo divides by 6000. The same light, bulky shipment therefore bills about 17% lighter as air freight. Air cargo adds minimum charges and handling fees, so the switch usually pays from around 100 kg chargeable.
DIM weight = L × W × H ÷ divisor; billable = max(actual, DIM, surcharge minimum)This page uses the same method as the Shipping DIM Weight Comparison Calculator, which explains each term and assumption in full.
| Service | Divisor | DIM weight, shipment | Billed at, shipment |
|---|---|---|---|
| DHL Express Worldwide | 5,000 | 50 kg | 50 kg |
| Air freight (IATA) | 6,000 | 40 kg | 40 kg |
| Road freight (LTL / groupage) | 3,000 | 80 kg | 80 kg |
Worked example
10 cartons of 40 × 30 × 20 cm, 3 kg each.
- 1DHL Express Worldwide: divisor 5,000, billed at 5 kg (DIM weight)
- 2Air freight (IATA): divisor 6,000, billed at 40 kg (DIM weight)
Air freight (IATA) bills it lighter, so it takes the smaller DIM penalty.
Frequently asked questions
Why do couriers use 5000 and airlines 6000?
Couriers price door-to-door service for parcels that take up space in sorting hubs and vans as well as aircraft, so they charge a denser factor. Airlines price airport-to-airport space on the aircraft using the IATA standard of 6000, or 167 kg per cubic metre.
How many cartons before air freight makes sense?
Rough rule: once the shipment's chargeable weight passes 70 to 100 kg. Below that, courier rates with DIM included are usually cheaper than air freight's minimums, terminal handling and delivery. Enter your carton count to see how far apart the two chargeable weights are.
Does DHL Express or Air cargo bill 10 cartons of 40 × 30 × 20 cm lighter?
10 cartons of 40 × 30 × 20 cm, 3 kg each bills 5 kg (DIM weight) with DHL Express Worldwide and 40 kg (DIM weight) with Air freight (IATA). Air freight (IATA) charges the lighter weight, so on equal rates it costs less. Try your own box in the calculator above.
Sources
- UPS, How to determine billable weight · checked
- FedEx, Dimensional weight · checked
- FedEx, 2026 surcharge and fee changes · checked
- USPS, Domestic Mail Manual: dimensional weight · checked
- DHL, How to calculate volumetric weight · checked
- Parcelforce Worldwide, How to measure a parcel for international delivery · checked
- Canada Post, How to cube an item and calculate its volumetric equivalent · checked
- Australia Post, What is cubic weight · checked
Related calculators
- Air Freight Chargeable Weight CalculatorChargeable weight for an air cargo shipment at the IATA 6000 cm³ per kg, for any number of cartons, with express and sea alternatives.
- Freight Volumetric Weight CalculatorChargeable weight for a shipment of cartons by air (1:6), road (1:3) and sea LCL (1:1), next to sending the same cartons by express courier.
- DHL Volumetric Weight CalculatorDHL Express chargeable weight: centimetres divided by 5000, rounded up to the next half kilogram, compared with UPS, FedEx and the posts.
- Shipping DIM Weight Comparison CalculatorEnter a box once and see what UPS, FedEx, USPS, DHL, national posts and freight would each bill it as, side by side, and which penalizes it least.
More in Freight & Logistics
- 6 × 6 × 6 Box Dimensional Weight
- 8 × 6 × 4 Box Dimensional Weight
- 8 × 8 × 8 Box Dimensional Weight
- 10 × 8 × 6 Box Dimensional Weight
- 10 × 10 × 10 Box Dimensional Weight
- 12 × 12 × 6 Box Dimensional Weight
- 12 × 12 × 8 Box Dimensional Weight
- 12 × 12 × 12 Box Dimensional Weight
- All 58 Freight & Logistics calculators