CBM Calculator
Calculate shipment volume for multiple carton types, convert dimensions automatically, total gross weight, and estimate container volume usage.
Shipment Settings
Choose the units used for carton dimensions and weight.
Carton Types
Add one row for each carton size in the shipment.
| # | Carton / Reference | Length | Width | Height | Qty | Gross Wt / Carton | CBM / Carton | Total CBM |
|---|
Shipment Summary
Calculated from all valid carton rows.
Container Volume Reference
Approximate percentage of nominal container volume represented by this shipment's CBM.
Volume percentage is only a planning reference. CBM alone cannot confirm that cargo will physically fit. Actual loading depends on internal container dimensions, carton dimensions and orientation, stacking restrictions, pallets, weight distribution and other operational constraints.
How CBM is calculated
Convert to meters
DIXANI converts the selected dimension unit to meters before calculating volume.
Calculate each carton
CBM per carton = Length × Width × Height in meters.
Multiply by quantity
Total shipment CBM is the sum of each carton type's CBM multiplied by its quantity.
CBM Calculation Example
Suppose one carton measures 60 cm × 40 cm × 35 cm.
First convert the dimensions to meters:
If the shipment contains 20 cartons:
This equals approximately 59.33 cubic feet. If each carton weighs 12 kg, the total gross weight would be 240 kg.
Why Is CBM Important in Shipping?
CBM is commonly used to measure cargo volume for freight, warehousing and transport planning.
It helps estimate how much space a shipment may occupy inside a truck, pallet area or shipping container. Freight forwarders may also use shipment dimensions together with weight when determining chargeable freight.
CBM alone does not confirm whether cargo will physically fit, because actual loading also depends on carton dimensions, orientation, stacking, pallets and vehicle or container limits.
How to Use CBM in Shipping and Load Planning
CBM is most useful when it is treated as a volume-planning measure rather than a guarantee that cargo will physically fit into a vehicle or container.
Estimate Shipment Volume
Use total CBM to understand the approximate space required by the shipment. This is useful when comparing shipment sizes, planning warehouse space or discussing freight requirements with a carrier or freight forwarder.
Compare Against Available Capacity
Total CBM can be compared with the nominal volume of a truck or shipping container as an initial planning reference. However, usable capacity may be lower because of carton dimensions, pallets, stacking limits and loading clearances.
Check Weight as Well as Volume
A shipment may fit by volume but still exceed vehicle, container, pallet or handling weight limits. Volume and gross weight should therefore be reviewed together during load planning.
Consider Carton Orientation
Two shipments with the same total CBM can have very different loading efficiency. Long, irregular or non-stackable cartons may leave unused spaces even when the calculated total volume appears to fit.
For final loading decisions, use actual internal vehicle or container dimensions together with carton dimensions, orientation, stacking rules and weight limits. CBM provides the overall volume, while a loading calculator is better suited to checking how individual cartons may fit.
Common CBM Calculation and Shipping Mistakes
Mixing Different Dimension Units
Length, width and height must use consistent units before volume is calculated. Mixing centimeters, meters or inches without conversion can produce a significantly incorrect CBM result.
Forgetting the Carton Quantity
CBM per carton represents only one package. For multiple identical cartons, multiply the volume of one carton by the total quantity to calculate the shipment volume.
Using Product Size Instead of Packed Size
Shipping volume should normally be calculated from the external dimensions of the packed carton or package. Product dimensions alone may not include packaging, protective material or outer cartons.
Assuming CBM Equals Usable Container Space
Nominal container volume cannot normally be used at 100% efficiency. Carton dimensions, pallets, loading clearances, orientation and non-stackable cargo can create unused space.
Ignoring Gross Weight
A shipment may appear to fit comfortably by CBM but still exceed weight limits. Check cargo weight together with volume when planning containers, vehicles, pallets and handling operations.
Confusing CBM with Volumetric Weight
CBM measures the physical volume occupied by cargo. Volumetric weight is a separate freight calculation that converts package dimensions into a chargeable weight reference using a carrier or transport-specific divisor.
Accurate shipping calculations start with correct packed dimensions, quantities and units. For final transport planning, CBM should be reviewed together with cargo weight, package dimensions and actual loading restrictions.
CBM Calculator — Frequently Asked Questions
What does CBM mean?
CBM means cubic meter, a common unit for measuring cargo and shipment volume.
How do I calculate CBM from centimeters?
Convert length, width and height from centimeters to meters, then multiply the three values. This calculator performs the conversion automatically.
Can CBM tell me exactly how many cartons fit in a container?
No. Total CBM is useful for volume planning, but exact loading also depends on the dimensions and orientation of individual cartons, stacking rules, pallets and container internal dimensions.
What is the difference between CBM and volumetric weight?
CBM measures the physical volume of a shipment in cubic meters. Volumetric weight converts package dimensions into a weight value using a carrier or transport-specific divisor and may be used when determining chargeable freight. They are related measurements, but they are not the same.