Free Freight & Shipping Tool Shipping & Logistics

Carton CBM Calculator

Calculate carton volume and total shipment CBM instantly.

Enter the outside dimensions of your export carton and the total number of cartons to calculate CBM per carton and total shipment CBM.

This tool is designed for importers, exporters, sourcing teams, wholesalers, manufacturers and logistics professionals planning ocean freight, air freight, container loads and international shipments.

Free to use Instant estimate Built for sourcing & trade

CBM Cubic meter calculation

Instant Shipment volume estimate

B2B Built for international trade

Carton Length

Enter the outside length of one packed carton.

Carton Width

Enter the outside width of one packed carton.

Carton Height

Enter the outside height of one packed carton.

Dimension Unit

Select the measurement unit used for all three carton dimensions.

Number of Cartons

cartons

Enter the total number of cartons in the shipment.

Use Packed Carton Dimensions

For freight planning, use the external dimensions of the final packed carton, not the product dimensions. Include any bulging, protective packing or outer packaging where relevant.

Shipment Volume

Calculated Shipment CBM

Enter carton dimensions

Add carton length, width, height and quantity to calculate shipment CBM.

Estimates generated by this calculator are for preliminary planning only. Actual manufacturing cost, finished weight, material consumption, packing, freight, duty, container utilization or other commercial results may vary according to construction, specifications, production method and supplier.

About this calculator

What Is a Carton CBM Calculator?

CBM, or cubic meter, is one of the most important measurements used in international freight and export logistics. It represents the amount of three-dimensional space occupied by a shipment.

Primeval's Carton CBM Calculator helps importers, exporters, manufacturers, sourcing teams and logistics professionals estimate the cubic volume of individual cartons and complete shipments using external packed dimensions.

CBM is particularly important for ocean freight, LCL shipments, container-loading estimates, warehouse planning and freight quotation comparisons. For air and courier shipments, dimensional or volumetric weight may also need to be calculated separately.

Enter carton length, width and height together with the total carton quantity. The calculator converts the dimensions into metres and calculates both CBM per carton and total shipment CBM.

Simple process

How to Calculate Carton CBM

Enter your specifications and use the result as a practical starting point for product, sourcing and shipment planning.

Measure carton length

Measure the longest external side of the final packed export carton. Use the outside measurement rather than internal carton dimensions.

Measure carton width

Measure the external width of the packed carton at its widest point.

Measure carton height

Measure the outside carton height after the product has been packed and the carton has been closed.

Select the measurement unit

Choose centimeters, millimeters, meters, inches or feet according to the dimensions you entered.

Enter the number of cartons

Add the total carton quantity included in the shipment.

Review total shipment volume

The calculator displays CBM per carton, total shipment CBM and the approximate cubic-foot equivalent.

CBM is calculated by converting the external carton dimensions into meters and multiplying length × width × height. For multiple identical cartons, the volume of one carton is multiplied by the carton quantity.

Formula

Total CBM = Length (m) × Width (m) × Height (m) × Number of Cartons

What the values mean

Carton Length: External length of one packed carton converted into meters.
Carton Width: External width of one packed carton converted into meters.
Carton Height: External height of one packed carton converted into meters.
Carton Quantity: Total number of identical cartons in the shipment.
Cubic Meter: Three-dimensional shipment volume expressed in cubic meters.

Practical examples

Carton CBM Calculation Examples

See how typical values translate into a useful planning estimate.

Example 1

60 × 40 × 35 cm Export Carton

A common export carton measuring 60 cm × 40 cm × 35 cm has a volume of 0.084 cubic meters.

Length: 60 cm
Width: 40 cm
Height: 35 cm
Quantity: 1 carton

Result 0.084 CBM

Example 2

100 Cartons of 60 × 40 × 35 cm

When all cartons have identical packed dimensions, multiply the CBM of one carton by the total carton quantity.

CBM per Carton: 0.084 CBM
Cartons: 100

Result 8.400 CBM total

Example 3

50 × 40 × 30 cm Cushion Carton

Home-textile products such as cushion covers may be packed into relatively compact cartons depending on folding and compression.

Length: 50 cm
Width: 40 cm
Height: 30 cm
Quantity: 80 cartons

Result 4.800 CBM total

Example 4

Large Carton 80 × 50 × 45 cm

Larger cartons may appear more packing-efficient per piece but can affect handling, carton strength and container-loading efficiency.

Length: 80 cm
Width: 50 cm
Height: 45 cm
Quantity: 50 cartons

Result 9.000 CBM total

CBM Explained

What Does CBM Mean in Shipping?

CBM stands for cubic meter. It measures the volume occupied by a three-dimensional object or shipment.

In international trade, CBM is commonly used to communicate shipment volume between buyers, suppliers, freight forwarders and logistics companies. If a shipment occupies 10 cubic meters of space, its volume can be described as 10 CBM.

CBM is particularly important for ocean freight because container and LCL capacity is heavily influenced by physical shipment volume.

Calculation

How Do You Calculate CBM of a Carton?

To calculate carton CBM, multiply carton length × width × height after converting every dimension into meters.

For example, a carton measuring 60 × 40 × 35 cm becomes 0.60 × 0.40 × 0.35 meters. Multiplying these dimensions gives 0.084 cubic meters.

Measure external dimensions Use the final outside carton measurements rather than internal dimensions.
Use one measurement system Make sure all three dimensions use the same unit.
Convert dimensions to meters Centimeters are divided by 100 before calculating cubic meters.
Multiply by quantity For identical cartons, multiply CBM per carton by the total number of cartons.

Formula Reference

CBM Formula for Different Measurement Units

The underlying calculation is the same, but conversion depends on the measurement unit used.

Common CBM Calculation Formulas

Dimensions Entered In	CBM Formula
Meters	Length × Width × Height
Centimeters	Length × Width × Height ÷ 1,000,000
Millimeters	Length × Width × Height ÷ 1,000,000,000
Inches	Convert inches to meters, then multiply L × W × H
Feet	Convert feet to meters, then multiply L × W × H

Examples

Common Carton CBM Reference Table

These values show approximate volume for one carton and assume the stated external dimensions.

Example Carton Sizes and CBM

Carton Size	CBM per Carton	100 Cartons
40 × 30 × 30 cm	0.036 CBM	3.600 CBM
50 × 40 × 30 cm	0.060 CBM	6.000 CBM
60 × 40 × 35 cm	0.084 CBM	8.400 CBM
60 × 50 × 40 cm	0.120 CBM	12.000 CBM
70 × 50 × 40 cm	0.140 CBM	14.000 CBM
80 × 50 × 45 cm	0.180 CBM	18.000 CBM

Export Packing

Why External Carton Dimensions Matter

Freight planning is based on the physical space occupied by the shipment. Therefore, buyers should use the outside dimensions of the final packed carton rather than the usable internal dimensions printed in a packaging specification.

Cartons can also expand slightly after being packed. Soft goods, rugs, cushions, bedding and other compressible textiles may create carton bulging if the packing ratio is too aggressive.

Carton board thickness External dimensions are slightly larger than internal usable space.
Product compression Soft textile products can push against carton walls and change the final external size.
Protective packing Corner guards, inserts, wrapping or outer bags can affect final dimensions.
Palletization Palletized shipment dimensions differ from individual carton volume and should be calculated separately where required.

Freight Planning

Why CBM Is Important for Importers and Exporters

CBM helps buyers estimate how much physical freight space their order may require. It can affect freight quotations, shipment consolidation, container selection, warehousing and commercial landed-cost calculations.

Ocean freight Volume is a major planning factor for both full-container and less-than-container shipments.
Container loading Total shipment CBM provides a first indication of container-space requirements.
LCL shipments Freight quotations commonly consider shipment volume together with weight.
Warehouse planning CBM can help estimate incoming storage volume before the shipment arrives.
Order costing Shipment volume can help allocate freight cost to products or purchase orders.
Supplier comparison Different packaging methods can materially change shipment volume for the same number of products.

Container Planning

CBM and Shipping Container Capacity

A container has a theoretical internal cubic capacity, but the total CBM of cartons does not translate directly into perfect physical loading. Carton shape, orientation, unused gaps, container dimensions, pallets and weight restrictions can reduce practical utilization.

Approximate Container Volume Reference

Container Type	Approximate Internal Volume	Planning Note
20 ft Standard	Approx. 33 m³	Actual carton load will normally be below theoretical volume
40 ft Standard	Approx. 67 m³	Physical loading efficiency depends on carton dimensions
40 ft High Cube	Approx. 76 m³	Common for higher-volume lightweight products
45 ft High Cube	Approx. 86 m³	Availability and route suitability should be confirmed

Important

Total Carton CBM Is Not the Same as Actual Container Utilization

A shipment totaling 60 CBM does not necessarily fit perfectly into exactly 60 CBM of container space. Real loading involves three-dimensional carton orientation and unavoidable unused spaces.

Use a dedicated container-loading calculation or physical loading plan before confirming the number of cartons that can fit into a container.

LCL Freight

How CBM Is Used in LCL Shipping

Less-than-container-load shipping allows multiple shippers' cargo to share container space. Because the freight provider must allocate space among different shipments, cubic volume is an important commercial measurement.

Actual LCL billing can depend on both shipment volume and gross weight, together with origin, destination, carrier and freight-forwarder charging rules.

Air Freight

CBM vs Volumetric Weight

CBM measures physical cubic volume, while volumetric or dimensional weight converts package dimensions into a theoretical chargeable weight used by many air-freight and courier services.

A shipment can therefore have low physical weight but high volumetric weight if it occupies a large amount of space.

Use Primeval's Volumetric Weight Calculator when planning air courier or air-freight shipments.

Gross Weight

CBM and Shipment Weight Should Be Considered Together

Volume alone does not provide a complete freight picture. Export shipments should normally be evaluated using both total CBM and gross weight.

Net weight Weight of the actual products without transport packaging.
Gross weight Product plus carton, wrapping, inserts, pallets and other relevant packaging.
Shipment CBM Physical volume occupied by the packed cargo.
Chargeable basis The applicable carrier or freight service determines how volume and weight influence the final rate.

Home Textiles

Why Packaging CBM Matters for Home Textile Buyers

Home-textile products can vary significantly in packing efficiency. Cushion covers may fold into relatively small cartons, while filled cushions, rugs, quilts, comforters and bulky throws may occupy much more volume relative to their product value.

Packaging optimization can therefore have a meaningful impact on freight cost and landed cost.

Cushion covers Unfilled covers can normally be folded and packed relatively efficiently.
Filled cushions Cushion inserts and filled products can create high shipping volume unless compressed appropriately.
Rugs Rolled or folded packing creates different shipment dimensions and handling requirements.
Throws and blankets Compression and folding configuration can affect pieces per carton and CBM.
Bedding Quilts, duvets and comforters can have substantial volume compared with their physical weight.

Packaging Efficiency

How Buyers Can Reduce Shipment CBM

Reducing unnecessary packaging volume can improve logistics efficiency without necessarily changing the product. However, packing should still protect goods against moisture, crushing and handling damage.

Optimize pieces per carton Test different packing quantities while keeping carton weight and handling practical.
Reduce excessive void space Avoid oversized cartons when a smaller specification provides adequate protection.
Standardize carton sizes A rationalized carton range can improve stacking and container-loading efficiency.
Improve folding method Consistent product folding can reduce irregular carton shapes and wasted space.
Use compression carefully Compressible textiles may allow lower volume, but excessive compression can damage presentation or product recovery.
Test container orientation Carton dimensions that appear efficient individually may not load efficiently inside a container.

Multiple Carton Sizes

How to Calculate CBM When a Shipment Has Different Carton Sizes

If your shipment contains several carton sizes, calculate each carton group separately and then add the CBM totals together.

For example, calculate the total volume of Size A cartons, calculate the total volume of Size B cartons, then combine both results to obtain overall shipment CBM.

This calculator handles one carton specification at a time, which keeps the calculation clear and makes it easy to verify individual packing groups.

Freight Quote

Information to Send a Freight Forwarder

A meaningful freight quotation usually requires more than total CBM alone. Providing complete shipment information reduces the risk of inaccurate preliminary rates.

Number of cartons State total packages in the shipment.
Carton dimensions Provide final external dimensions for each carton size.
Gross weight Provide gross weight per carton and total gross weight.
Total CBM Provide combined packed shipment volume.
Origin State factory location, port or pickup location.
Destination Provide destination port, airport, city or delivery address as relevant.
Product description Describe the goods clearly for freight and compliance purposes.
Shipping mode Specify ocean FCL, ocean LCL, air freight, courier or other requested service.

Accuracy

Common CBM Calculation Mistakes

Small unit or measurement errors can create large differences when multiplied across hundreds of cartons.

Mixing centimeters and meters All dimensions must use a consistent measurement basis.
Using product dimensions Freight planning requires packed carton dimensions rather than unpacked product measurements.
Forgetting carton quantity CBM per carton must be multiplied by total package quantity.
Using internal carton size Outside dimensions better reflect the physical space occupied during transport.
Ignoring multiple carton sizes Different carton specifications should be calculated separately and then combined.
Assuming theoretical container volume equals loadable CBM Physical loading normally involves unused space and dimensional constraints.

Sourcing

Use CBM Early in Product Sourcing

Freight can materially affect the landed cost of imported home textiles and home décor. Asking a supplier for preliminary packing details during sourcing can help buyers compare products more accurately.

When possible, request pieces per carton, external carton dimensions, net weight, gross weight and total estimated cartons together with the product quotation.

Important

Carton CBM Is a Planning Estimate

The calculator performs a geometric volume calculation based on the dimensions and quantity entered. Final shipment measurements can vary because of carton manufacturing tolerance, bulging, palletization, protective wrapping or packing changes.

Always confirm final packed dimensions and gross weight before freight booking or shipping documentation is finalized.

For importers & buyers

Before Using CBM for Freight Costing

CBM provides an essential starting point, but freight cost and container capacity depend on additional shipment characteristics.

Use final external carton dimensions

Pre-production or internal carton measurements can understate actual shipment volume.

Separate different carton sizes

Calculate each packing specification independently and add the totals.

Check gross weight

A shipment can be limited by weight even when available cubic volume remains.

Do not assume 100% container utilization

Carton dimensions, orientation and void spaces influence real loading.

Include pallets when used

Palletized dimensions and volume can differ significantly from loose-carton totals.

Confirm final data before booking

Use production packing measurements rather than calculator estimates for final logistics documents.

Source with Primeval

Planning a Home Textile Order from India?

Primeval helps international buyers source home textiles and home décor products from Indian manufacturing capabilities. Share your product, quantity, packaging requirements and destination market for a commercial sourcing discussion.

CBM planning can help you understand freight impact earlier in the buying process and compare different packing solutions more effectively.

Cushion covers
Rugs and carpets
Throws and blankets
Curtains
Bed linen
Duvet covers
Pillowcases
Table linen
Kitchen textiles
Bath textiles
Custom product development
Private-label packaging
Export carton planning
Sampling support
Wholesale and export sourcing

Buyer questions

Carton CBM Calculator FAQs

Helpful answers about calculations, sourcing estimates and commercial planning.

What is CBM?

CBM stands for cubic meter. It is a measure of three-dimensional volume commonly used in shipping, freight, warehousing and container planning.

How do I calculate CBM of a carton?

Convert carton length, width and height into meters and multiply the three values together. The result is the CBM of one carton.

What is the CBM formula?

CBM = Length in meters × Width in meters × Height in meters. For multiple identical cartons, multiply the result by the carton quantity.

How do I calculate CBM using centimeters?

Multiply length × width × height in centimeters and divide by 1,000,000 to obtain cubic meters.

How do I calculate CBM in millimeters?

Multiply length × width × height in millimeters and divide by 1,000,000,000 to obtain cubic meters.

Can I calculate carton CBM using inches?

Yes. Select inches as the dimension unit and enter the carton length, width and height in inches. The calculator converts them for the CBM calculation.

Can I calculate CBM using feet?

Yes. Select feet from the measurement-unit field and enter all dimensions using feet.

What dimensions should I use for carton CBM?

Use the external dimensions of the final packed carton because these represent the actual physical space occupied during transport.

Should I use internal or external carton dimensions?

Use external dimensions for freight and shipment-volume calculations.

How do I calculate total CBM for 100 cartons?

Calculate the CBM of one carton and multiply the result by 100, assuming all cartons have identical dimensions.

What is the CBM of a 60 × 40 × 35 cm carton?

A 60 × 40 × 35 cm carton has a volume of approximately 0.084 CBM.

How much CBM are 100 cartons measuring 60 × 40 × 35 cm?

One carton is approximately 0.084 CBM, so 100 identical cartons are approximately 8.4 CBM.

What is the difference between CBM per carton and total CBM?

CBM per carton measures the volume of one package. Total CBM multiplies that value by the number of cartons in the shipment.

How do I calculate CBM when cartons have different sizes?

Calculate each carton-size group separately, multiply each CBM by its respective quantity, and then add the group totals.

Is CBM used for ocean freight?

Yes. Shipment volume is an important planning and commercial factor in both FCL and LCL ocean freight.

Is CBM used for LCL shipping?

Yes. LCL freight commonly considers shipment volume together with weight and the freight provider's charging rules.

Is CBM used for air freight?

CBM describes shipment volume, but air freight frequently uses dimensional or volumetric weight for billing. Use a volumetric-weight calculator for that analysis.

Is CBM the same as volumetric weight?

No. CBM is physical cubic volume. Volumetric weight converts package dimensions into a theoretical weight for freight-rating purposes.

Is CBM the same as gross weight?

No. CBM measures volume, while gross weight measures the physical weight of the product and packaging.

Can CBM tell me how many cartons fit in a container?

CBM provides a useful first estimate, but exact container loading also depends on carton dimensions, orientation, unused spaces, pallets and container weight limits.

How many CBM fit in a 20-foot container?

A standard 20-foot container has roughly 33 cubic meters of theoretical internal volume, but practical carton loading is normally lower because the space cannot always be utilized perfectly.

How many CBM fit in a 40-foot container?

A standard 40-foot container has roughly 67 cubic meters of internal volume, although actual usable load depends on carton dimensions and loading conditions.

How many CBM fit in a 40-foot high-cube container?

A 40-foot high-cube container has roughly 76 cubic meters of internal volume. Actual loadable cargo volume is usually lower than this theoretical capacity.

Why does carton size matter for container loading?

Container loading is a three-dimensional packing problem. Two shipments with the same total CBM can have different loading efficiency because their carton dimensions and orientations differ.

Does carton bulging affect CBM?

Yes. If packed cartons expand beyond their nominal dimensions, the actual space occupied can increase.

Does palletization increase shipment CBM?

It can. Pallets can create additional height, footprint and unused spaces compared with loose carton loading.

Can reducing carton size lower freight cost?

Potentially. More efficient packing can reduce shipment volume, but actual freight savings depend on the freight mode, rate structure, weight and shipment conditions.

Should I calculate CBM before requesting a freight quote?

Yes. Freight forwarders commonly request carton quantity, dimensions, gross weight and total shipment volume when preparing preliminary quotations.

Can this calculator be used for home textile exports?

Yes. It can be used for packed cushions, rugs, curtains, bedding, throws, bath textiles, kitchen textiles and other products when final carton dimensions are known.

Can this calculator calculate cubic feet too?

Yes. The calculator also displays an approximate total cubic-foot equivalent alongside shipment CBM.

Is the CBM result suitable for final shipping documents?

Use the calculator for planning. Final shipping documents should use confirmed production packing measurements and actual shipment data.

Does Primeval help buyers with export packaging?

Primeval sourcing discussions can include product specifications, private-label requirements, packaging and export-planning considerations when buyers submit their requirements.

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