Free Shipping & Freight Tool Shipping & Logistics

Carton CBM Calculator

Calculate carton volume and total shipment CBM in seconds.

Enter the external dimensions of one packed carton and the total number of cartons to calculate CBM per carton and total cubic volume.

This calculator is built for importers, exporters, sourcing teams, manufacturers, freight planners and wholesale buyers preparing international shipments.

Free to use Instant estimate Built for sourcing & trade

CBM Cubic meter calculation

Instant Per-carton & shipment volume

B2B Built for freight planning

Carton Length

Enter the external packed length of one carton.

Carton Width

Enter the external packed width of one carton.

Carton Height

Enter the external packed height of one carton.

Number of Cartons

cartons

Enter the total number of cartons included in the shipment.

Use External Packed Dimensions

For freight planning, use the final external carton dimensions after packing. Product dimensions alone do not represent shipment CBM.

Shipment Volume

Estimated Shipment Volume

Enter carton dimensions

Add the external carton size and number of cartons 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 shipping. It represents the physical volume occupied by cargo and is commonly used for ocean freight, less-than-container-load shipments, container planning, warehousing and freight quotations.

Primeval's Carton CBM Calculator helps buyers, importers, exporters and manufacturers estimate the cubic volume of a packed carton and the total volume of an entire shipment.

To calculate shipment CBM correctly, use the external dimensions of the final packed carton rather than the dimensions of the product inside. The calculator converts carton length, width and height from centimetres to metres, calculates volume per carton and multiplies that volume by the total number of cartons.

The resulting figure can be used as an early planning input for freight quotations, container-loading estimates, warehouse-space calculations and landed-cost analysis.

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 the packed carton length

Measure the external length of the final packed carton. Use the completed shipping carton rather than the unpacked product dimensions.

Enter carton width

Add the external width of one shipping carton in centimetres.

Enter carton height

Add the external packed height. Bulging, compression and packing arrangement can affect final dimensions, so use realistic packed measurements.

Enter the number of cartons

Enter the total carton quantity included in the shipment.

Calculate CBM per carton

The calculator converts all three dimensions into metres and multiplies them to determine the cubic volume of one carton.

Review total shipment CBM

The carton volume is multiplied by carton quantity to estimate the total shipment volume for freight and logistics planning.

When carton dimensions are entered in centimetres, divide each measurement by 100 to convert it into metres. Multiply length, width and height in metres to calculate CBM for one carton. Then multiply by the total number of cartons.

Formula

Total CBM = (Length cm ÷ 100) × (Width cm ÷ 100) × (Height cm ÷ 100) × Number of Cartons

What the values mean

Carton Length: External packed carton length converted from centimetres to metres.
Carton Width: External packed carton width converted from centimetres to metres.
Carton Height: External packed carton height converted from centimetres to metres.
Carton Quantity: Total number of cartons included in the planned shipment.
Cubic Meter: Volume measurement equal to one metre × one metre × one metre.

Practical examples

Carton CBM Calculation Examples

See how typical values translate into a useful planning estimate.

Example 1

60 × 40 × 35 cm Carton

A common export carton measuring 60 cm × 40 cm × 35 cm occupies 0.084 cubic metres.

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

Result 0.084 CBM per carton

Example 2

100 Cartons of 60 × 40 × 35 cm

Once the volume of one carton is known, multiply it by the number of cartons to estimate total shipment volume.

CBM per Carton: 0.084
Quantity: 100 cartons

Result 8.400 CBM total shipment volume

Example 3

50 × 40 × 30 cm Carton

A compact carton measuring 50 × 40 × 30 cm occupies 0.060 CBM.

Length: 50 cm
Width: 40 cm
Height: 30 cm

Result 0.060 CBM per carton

Example 4

250 Cartons of 50 × 40 × 30 cm

A shipment containing 250 identical cartons of 0.060 CBM each has a theoretical volume of 15 CBM.

CBM per Carton: 0.060
Cartons: 250

Result 15.000 CBM total

CBM Explained

What Does CBM Mean in Shipping?

CBM stands for cubic meter. It measures the amount of three-dimensional space occupied by cargo.

In international trade, CBM is frequently used to describe shipment volume for ocean freight, consolidated cargo, warehouse planning and container capacity calculations.

One cubic meter represents a volume measuring one metre long, one metre wide and one metre high.

Ocean freight CBM is commonly used when planning less-than-container-load and consolidated shipments.
Container planning Shipment CBM helps buyers estimate how much physical container volume cargo may occupy.
Warehousing Cubic volume can help estimate storage-space requirements.
Freight quotations Forwarders may request both volume and gross weight before quoting shipment cost.

Basic Formula

How to Calculate CBM from Carton Dimensions

For a rectangular carton, calculate volume by multiplying length × width × height after converting all measurements into metres.

If measurements are provided in centimetres, the direct formula is:

Length × Width × Height ÷ 1,000,000 = CBM per carton.

The divisor is one million because one cubic metre contains 1,000,000 cubic centimetres.

Carton Quantity

How to Calculate Total Shipment CBM

After calculating CBM for one carton, multiply the figure by the number of identical cartons in the shipment.

For example, if one carton occupies 0.084 CBM and the shipment contains 100 cartons, total shipment volume is 8.4 CBM.

If the shipment contains several carton sizes, calculate each carton group separately and add the resulting CBM values together.

Unit Conversion

CBM Formula for Centimeters, Meters and Inches

Always make sure all dimensions use a consistent unit before calculating volume.

Common CBM Conversion 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 dimensions to meters before multiplying
Feet	Calculate cubic feet and convert to cubic meters

Carton Reference

Example Carton Sizes and CBM

The following values are mathematical examples based on external carton dimensions.

Carton CBM Reference Table

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
50 × 40 × 40 cm	0.080 CBM	8.000 CBM
60 × 40 × 35 cm	0.084 CBM	8.400 CBM
60 × 50 × 40 cm	0.120 CBM	12.000 CBM
70 × 50 × 50 cm	0.175 CBM	17.500 CBM

Freight Planning

Why CBM Matters to Importers and Exporters

International buyers frequently focus on product cost but underestimate the effect of packaging volume on freight economics. A product that is lightweight but bulky may occupy substantial container or aircraft space.

CBM therefore becomes an important commercial planning metric before purchase orders are finalized.

Compare packing methods Different carton configurations can produce different shipment volumes for the same number of products.
Estimate freight exposure Shipment volume provides an important input when requesting transport quotations.
Plan container utilization Total CBM helps estimate whether an order may require LCL or FCL shipping.
Evaluate landed cost Freight cost can materially affect landed cost per unit.
Optimize packaging Reducing unnecessary carton volume may improve freight efficiency when product protection is maintained.

External Dimensions

Use Packed Carton Dimensions, Not Product Dimensions

A common CBM calculation mistake is entering product dimensions instead of the final shipping-carton dimensions.

CBM used for logistics should reflect the physical space occupied by the shipment after products are folded, rolled, compressed, bagged and packed into transport cartons.

Carton board thickness External carton measurements are slightly larger than internal dimensions.
Product arrangement The number and orientation of products packed in each carton affects carton size.
Protective packing Inner bags, tissue, cardboard inserts and protection can increase final dimensions.
Compression Textile products may sometimes be compressed to reduce volume, subject to product and buyer requirements.

Home Textiles

Why Carton CBM Is Important for Home Textile Shipments

Home-textile products can have very different relationships between weight and volume. Cushions, pillows, comforters and filled products may consume significant space even when their net product weight is relatively low. Rugs and carpets can be dense but may require bulky rolled packaging.

Cushion covers Usually compact when folded, although retail packaging can increase carton volume.
Filled cushions Volume may become more important than weight because filled products contain substantial air space.
Throws & blankets Fold dimensions, thickness and compression affect packing efficiency.
Bedding Comforters, quilts and duvets can generate significant cubic volume.
Rugs Rolled or folded packing method substantially affects transport dimensions.
Curtains Carton efficiency depends on fabric weight, folding and retail packaging.

CBM vs Weight

CBM Is Not the Same as Shipment Weight

CBM measures volume, while kilograms measure mass. Freight planning often requires both.

A shipment can be physically bulky but lightweight, or compact and very heavy. Ocean, air, courier and road carriers may therefore use different methods to determine chargeable freight.

CBM Measures the amount of physical space occupied by cargo.
Net weight Weight of products without external shipping packaging.
Gross weight Total weight including cartons and other transport packaging.
Volumetric weight A dimensional-weight calculation often used by air and courier services.

Air Freight

CBM and Volumetric Weight Are Different Calculations

Although both use shipment dimensions, CBM and volumetric weight serve different purposes. CBM measures physical cubic volume, while dimensional or volumetric weight converts package dimensions into a theoretical weight for carrier charging.

For courier or air freight planning, calculate both actual weight and volumetric weight and confirm the applicable carrier rule.

Ocean Freight

How CBM Is Used for LCL Shipments

Less-than-container-load shipments combine cargo from multiple shippers into shared container space. Shipment cubic volume is therefore an important input in freight planning.

Actual LCL freight charging methods can also consider shipment weight, minimum charges, local handling, documentation and port costs. A CBM calculation alone should not be treated as a complete freight quotation.

Container Planning

Can Shipment CBM Tell You How Many Cartons Fit in a Container?

Total carton CBM is useful for container planning, but dividing container volume by carton CBM does not guarantee that the calculated number of cartons will physically fit.

Real container utilization depends on carton orientation, internal container dimensions, loading pattern, door clearance, weight restrictions, pallets, void space and practical handling requirements.

Use Primeval's Container Loading Calculator after calculating carton CBM for a more appropriate planning estimate.

Container Capacity

Typical Container Volume Reference

Container capacities vary by equipment design and carrier. These figures should be used only as general planning references.

Approximate Container Internal Volume

Container Type	Approx. Internal Volume
20 ft Standard	Approximately 33 m³
40 ft Standard	Approximately 67 m³
40 ft High Cube	Approximately 76 m³
45 ft High Cube	Approximately 86 m³

Packing Efficiency

Why Actual Container Utilization Is Lower Than Theoretical Volume

A container's published internal cubic volume does not mean every cubic meter can always be filled with cartons.

Carton geometry Carton dimensions may not divide evenly into container dimensions.
Orientation restrictions Some cartons or products should only be loaded in specific orientations.
Door clearance Cargo must physically pass through container doors.
Pallets Palletized cargo normally reduces usable cubic space.
Weight limits Heavy cargo can reach payload restrictions before the entire volume is used.
Handling space Operational loading requirements can create unavoidable voids.

Packaging Optimization

How Buyers Can Reduce Shipment CBM

Reducing unnecessary packaging volume can lower freight exposure, improve warehouse efficiency and increase container utilization. However, packaging should never be reduced below the level required to protect the product.

Optimize carton dimensions Match the carton closely to the actual packed product dimensions.
Increase pieces per carton Where weight and product protection allow, increasing packing density may reduce total carton quantity.
Improve folding method Textile folding and stacking arrangement can materially influence carton size.
Compression packing Suitable textile products may sometimes be compressed to reduce cubic volume.
Standardize cartons A rationalized carton-size programme can improve handling and loading efficiency.
Test actual packing Develop a packing trial before relying on theoretical carton dimensions for commercial freight planning.

Buying Strategy

Request Packing Details Before Confirming a Purchase Order

Import buyers should request expected packing details from suppliers before finalizing shipment budgets. Product price alone is not enough to understand import economics.

Pieces per carton Confirm how many saleable units will be packed into each carton.
Carton dimensions Request expected external length, width and height.
Net weight Ask for approximate product weight without outer packing.
Gross weight Request estimated packed carton weight.
Total cartons Calculate carton quantity from order quantity and pieces per carton.
Total CBM Use carton size and quantity to estimate total shipment volume.

Landed Cost

How CBM Affects Cost per Product

If freight is quoted for the complete shipment, buyers can allocate the estimated freight charge across saleable units to understand freight cost per product.

Packaging optimization that reduces total shipment volume can therefore improve landed-cost economics even when the ex-factory product cost remains unchanged.

Multiple Carton Sizes

How to Calculate CBM for a Shipment with Different Carton Sizes

If an order contains several carton dimensions, calculate each group separately.

For example, calculate the CBM of 50 cartons of Size A, then 30 cartons of Size B, then add both totals together. This produces a more accurate shipment volume than averaging carton dimensions.

Important

CBM Is a Planning Figure, Not a Freight Quotation

This calculator estimates cubic volume from the dimensions and quantities entered. It does not calculate carrier tariffs, fuel surcharges, port charges, dimensional-weight rules, customs expenses, handling fees or local delivery.

Always provide your freight forwarder with final packed dimensions, carton count, gross weight, origin, destination and cargo details when requesting an actual freight quotation.

For importers & buyers

Before Using CBM for Freight Quotations

Accurate shipping-volume estimates depend on final packing information. Small differences in carton dimensions can create meaningful changes across hundreds or thousands of cartons.

Use external dimensions

Measure the outside of the packed shipping carton, not internal carton dimensions.

Confirm final packing

Prototype or production packing may differ from preliminary assumptions.

Separate carton sizes

Calculate each carton format independently instead of using an average size.

Confirm gross weight

Forwarders normally require shipment weight as well as cubic volume.

Allow for pallets

Palletized shipments can have different overall dimensions and volume.

Confirm freight basis

Carrier charging methods differ by transport mode, route and service.

Source with Primeval

Planning a Home Textile Shipment from India?

Primeval helps international buyers source home textiles from Indian manufacturers. Share your product, quantity, specifications, packaging requirements and target market for a sourcing discussion.

Use this Carton CBM Calculator to estimate shipment volume, then combine it with freight, landed-cost and container-loading calculations for broader commercial planning.

Cushion covers
Rugs & carpets
Throws & blankets
Curtains
Bed linen
Duvet covers
Pillowcases
Table linen
Kitchen textiles
Bath textiles
Private-label products
Custom packaging
Export carton planning
Sampling support
Wholesale manufacturing

Buyer questions

Carton CBM Calculator FAQs

Helpful answers about calculations, sourcing estimates and commercial planning.

What does CBM stand for?

CBM stands for cubic meter, a measurement of three-dimensional volume commonly used in freight and international shipping.

How do you calculate carton CBM?

Convert carton length, width and height to metres and multiply the three values. When dimensions are entered in centimetres, multiply length × width × height and divide by 1,000,000.

What is the formula for CBM in centimeters?

CBM = Length in cm × Width in cm × Height in cm ÷ 1,000,000.

How do I calculate total CBM for multiple cartons?

Calculate CBM for one carton and multiply it by the total number of cartons with the same dimensions.

How do I calculate CBM if carton sizes are different?

Calculate each carton-size group separately and add all group totals together.

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

A 60 × 40 × 35 cm carton has a theoretical volume of 0.084 cubic meters.

What is the CBM of a 50 × 40 × 30 cm carton?

A 50 × 40 × 30 cm carton has a theoretical volume of 0.060 CBM.

What is the CBM of 100 cartons measuring 60 × 40 × 35 cm?

Each carton is 0.084 CBM, so 100 identical cartons equal approximately 8.4 CBM.

Should I use product dimensions or carton dimensions?

Use final external packed-carton dimensions for shipment and freight CBM calculations.

Does carton thickness affect CBM?

External carton dimensions include carton-board thickness and therefore represent the actual physical volume occupied during shipment.

Is CBM the same as cubic feet?

No. Both measure volume, but they use different units. The calculator also displays approximate total cubic feet for reference.

Is CBM the same as weight?

No. CBM measures cubic volume while kilograms measure physical weight.

What is gross weight?

Gross weight is the total weight of products plus relevant packaging materials such as cartons, wrapping and pallets.

What is net weight?

Net weight generally refers to the product weight excluding outer transport packaging.

Does this calculator calculate freight cost?

No. It calculates shipment volume. Freight rates depend on transport mode, route, weight, carrier, service and other charges.

Can I use CBM for ocean freight?

Yes. Shipment CBM is an important planning measurement for ocean freight, particularly consolidated and LCL cargo.

Can I use this calculator for air freight?

You can calculate physical cubic volume, but air freight often uses dimensional or volumetric weight for charging, so use a Volumetric Weight Calculator as well.

What is volumetric weight?

Volumetric weight converts package dimensions into a theoretical weight according to a carrier-specific divisor. It is different from CBM.

Can total CBM tell me which container I need?

It can support preliminary planning, but physical container loading also depends on carton orientation, container dimensions, weight limits, pallets and unused space.

How much CBM fits in a 20-foot container?

A 20-foot standard container has roughly 33 cubic meters of internal volume, but actual usable loading volume is generally lower.

How much CBM fits in a 40-foot container?

A standard 40-foot container has roughly 67 cubic meters of internal volume. Actual loading depends on cargo dimensions and loading efficiency.

How much CBM fits in a 40-foot high-cube container?

A 40-foot high-cube container has roughly 76 cubic meters of internal volume, but actual usable capacity can be lower.

Why can I not use 100% of container CBM?

Carton dimensions, void spaces, loading orientation, pallets, door clearance and weight restrictions prevent perfect theoretical utilization.

Can packaging optimization reduce freight cost?

Potentially. Reducing unnecessary shipment volume can improve freight efficiency where transport charges are influenced by space, but packaging must still protect the product.

Can this calculator be used for textile shipments?

Yes. It is particularly useful for cartons containing cushion covers, bedding, curtains, throws, rugs and other home-textile products.

Can CBM help calculate landed cost?

Yes. CBM can help estimate or allocate freight exposure, which can then be incorporated into landed-cost calculations.

Is the calculated CBM accepted as final shipping data?

The result is a planning estimate. Final shipping documents should use confirmed packed dimensions and shipment details.

What dimensions should I send a freight forwarder?

Provide external packed carton dimensions, carton quantity, gross weight, origin, destination and relevant cargo information.

Continue calculating

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Home Textile Sourcing & Shipping Planning

Planning an Import Order from India?

Share your product, quantity, specifications and packaging requirements with Primeval. Use your CBM estimate as part of a broader sourcing, packing and commercial planning process.

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