CBM calculator

Carton dimensions
cm
cm
cm
kg
How is it travelling?

Each mode converts volume to chargeable weight differently — this is the single biggest reason two quotes on the same box look nothing alike.

LCL is quoted per revenue tonne: whichever is greater, 1 CBM or 1000 kg.

Total volume
9.6 m³

0.096 m³ per carton · 339 ft³

Total weight
1,200 kg
Density
125 kg/m³
Chargeable weight
9,600 kg
Billed on volume
Revenue tonnes
9.6
This freight is volume-limited: you pay for 8400 kg you are not shipping. Denser packing or a different mode will save money.
Chargeable weight by mode

Air freight (IATA) is 7,996.8 kg lower than Sea LCL (weight/measure) — a 83% difference on the same shipment.

Air freight (IATA) Lowest1,603.2 kg
167 kg/m³
Air express / courier1,920 kg
200 kg/m³
Road freight (Europe)3,196.8 kg
333 kg/m³
Rail freight3,196.8 kg
333 kg/m³
Sea LCL (weight/measure)Selected9,600 kg
1000 kg/m³

Same consignment, four answers. This is why a forwarder can undercut an express carrier on a bulky pallet and lose to them on a dense one.

Step-by-step breakdown of the calculation
StepWorkingResult
CBM per cartonCentimetres cubed divided by a million gives cubic metres.0.096 m³
Total CBM for 100 cartons9.6 m³
Volumetric weight — Sea LCL (weight/measure)LCL is quoted per revenue tonne: whichever is greater, 1 CBM or 1000 kg.Source: Ocean freight trade practice (no issuing authority)9,600 kg
Chargeable weight9,600 kg

CBM on ShipMargin Rates checked 2 Sept 2026 How this is calculated