Volume Weight Calculator for Air Freight
Answer: Air freight volume weight equals packed length x width x height in centimeters x quantity divided by the carrier divisor, usually 6000 for air freight.
Volume weight for air freight is length x width x height in centimeters x quantity divided by the carrier divisor, usually 6000 for standard air cargo and 5000 for many express services.
How the calculation works
Airlines and express carriers charge for both weight and space. The volume-weight formula converts packed cargo dimensions into a kilogram value so light, bulky freight pays for the aircraft space it occupies.
air freight volume weight kg = length cm x width cm x height cm x quantity / divisorUse the outer packed carton, crate, or pallet dimensions. For standard forwarder-managed air freight, 6000 cm3/kg is the conservative planning divisor unless the quote states otherwise. For express courier shipments, 5000 cm3/kg is common and produces a higher billable weight.
Volume weight is only one side of the chargeable-weight check. To estimate the billable weight, compare volume weight with actual gross weight and use the higher value.
FAQ
What is volume weight in air freight?
Volume weight, also called volumetric weight or dimensional weight, is the kilogram value created from shipment dimensions. It reflects how much aircraft space the cargo uses.
What is the standard air freight volume-weight divisor?
Use 6000 cm3/kg for standard international air freight planning unless your airline, forwarder, or contract specifies another divisor.
Why do express carriers often use 5000?
A 5000 divisor creates a higher volume weight from the same carton. Express networks have tighter aircraft, hub, and van capacity, so many services use the stricter divisor.
Is volume weight the same as chargeable weight?
No. Chargeable weight is usually the higher of actual gross weight and volume weight. This calculator gives the volume-weight side of that comparison.
Should I use inches or centimeters?
Either is fine in the calculator. The formula converts dimensions to centimeters internally before dividing by the selected divisor.
Do carriers round dimensions?
Often yes. Airlines and couriers may round dimensions, weight, or final chargeable weight up according to service rules. Use measured packed dimensions and confirm rounding on the quote.
How do I know if volume weight will be higher than actual weight?
Divide actual gross weight by total CBM. If density is below about 166.7 kg/m3 with a 6000 divisor, volume weight will usually be higher.
Can I use this for FBA shipments?
Yes. It is useful for checking air freight and express volume weight before quoting Amazon FBA replenishment shipments, samples, and urgent ecommerce stock.
Comparison
| Service type | Common divisor | Equivalent density | Best for |
|---|---|---|---|
| Standard air freight | 6000 cm3/kg | 166.7 kg/m3 | Forwarder-managed airport or door air cargo |
| Express courier | 5000 cm3/kg | 200 kg/m3 | Urgent parcels, samples, and ecommerce replenishment |
| US inch-pound parcel | 139 in3/lb | About 200 kg/m3 | Domestic or account-based parcel rating |
| Ocean LCL | 1 CBM = 1000 kg equivalent | 1000 kg/m3 | Slower heavy or bulky freight |
Dated facts
As of May 2026, 6000 cm3/kg remains a common planning divisor for standard international air freight, while 5000 cm3/kg is common for express courier and parcel-style air services. Under the 6000 divisor, cargo below about 166.7 kg per CBM is volume-sensitive; under the 5000 divisor, cargo below 200 kg per CBM is volume-sensitive. Final carrier billing can still change because of dimension rounding, minimum charges, fuel and security surcharges, and route-specific account rules.
Frequently asked questions
- What is the air freight volume weight formula?
- Volume weight in kg equals length x width x height in centimeters x quantity divided by the carrier divisor.
- What divisor should I use for air freight?
- Use 6000 cm3/kg for standard international air freight unless your forwarder gives a different divisor.
- When should I use the 5000 divisor?
- Use 5000 for many international express courier shipments and any quote where the carrier explicitly gives a 5000 divisor.
- Is volume weight the final billable weight?
- Not alone. Forwarders compare volume weight with actual gross weight and usually bill the higher number as chargeable weight.
- Should I enter product size or carton size?
- Enter the outer packed carton, master carton, crate, or pallet dimensions because that is the space the carrier measures.
- How do I know if my cargo is volume-sensitive?
- If actual weight density is below about 166.7 kg per CBM with a 6000 divisor, volume weight will usually exceed actual weight.