Free Shipping & Freight Tool Shipping & Logistics

CBM Calculator

Calculate shipment volume in cubic meters before requesting freight or container pricing.

Enter the external dimensions of your carton, bale or package together with the number of units to instantly calculate approximate shipment volume in CBM — cubic meters.

This tool is designed for importers, exporters, sourcing teams, manufacturers, freight planners and wholesale buyers who need a quick volume estimate for ocean freight, container loading and logistics planning.

Free to use Instant estimate Built for sourcing & trade

CBM Cubic meter calculation

Instant Shipment volume estimate

B2B Built for import & export

Dimension Unit

Choose the measurement unit used for carton length, width and height.

Carton Length

Enter the external length of one packed carton or package.

Carton Width

Enter the external width of one packed carton or package.

Carton Height

Enter the external height of one packed carton or package.

Number of Cartons

cartons

Enter the total number of cartons, packages, bales or similar shipping units.

Use External Packed Dimensions

For freight planning, use the outside dimensions after packing, not the internal carton dimensions or product dimensions. Bulging, straps, wrapping and pallets can increase actual shipment volume.

Shipment Volume

Shipment CBM Result

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 CBM Calculator?

CBM stands for cubic meter and is one of the most commonly used volume measurements in international freight and logistics. Importers, exporters, manufacturers and freight forwarders use CBM to estimate how much space a shipment occupies.

Primeval's CBM Calculator converts carton or package dimensions into cubic meters and multiplies that volume by the number of packages in the shipment. It also provides cubic feet for buyers and logistics teams working with imperial measurements.

CBM is particularly useful when comparing ocean-freight options, planning LCL shipments, estimating container utilization, reviewing packaging efficiency or preparing preliminary shipping enquiries.

The calculated volume is a planning estimate. Freight forwarders may use actual packed dimensions, pallet dimensions, chargeable weight, minimum-volume rules or other carrier-specific methods when preparing a commercial freight quotation.

Simple process

How to Calculate CBM

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

Choose your dimension unit

Select centimeters, millimeters, meters, inches or feet according to the dimensions provided by your supplier or packing team.

Enter carton length

Measure the longest external side of the packed carton, bale or package.

Enter carton width

Enter the outside width of the packed shipping unit.

Enter carton height

Add the external packed height, including any normal bulging or protective packing where appropriate.

Enter the number of cartons

Add the total quantity of identical cartons or packages included in the shipment.

Review total shipment volume

The calculator displays CBM per carton, total shipment CBM and cubic feet for preliminary freight planning.

CBM is calculated by multiplying package length, width and height after converting all dimensions to meters. To calculate total shipment volume, multiply the CBM of one carton by the total number of cartons.

Formula

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

What the values mean

Length: External length of one packed carton converted to meters.
Width: External width of one packed carton converted to meters.
Height: External height of one packed carton converted to meters.
Quantity: Total number of cartons or packages in the shipment.
Cubic Meter: The volume of the shipment measured in cubic meters.

Practical examples

CBM Calculation Examples

See how typical values translate into a useful planning estimate.

Example 1

One Carton — 60 × 40 × 35 cm

Convert each dimension from centimeters to meters before multiplying them together.

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

Result 0.084 CBM

Example 2

100 Cartons — 60 × 40 × 35 cm

If each carton is 0.084 CBM, multiply the carton volume by 100.

CBM per Carton: 0.084
Quantity: 100 cartons

Result 8.40 CBM total shipment volume

Example 3

50 Cartons — 50 × 40 × 30 cm

A smaller carton can significantly reduce overall shipment volume when multiplied across a large order.

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

Result 3.00 CBM total

Example 4

Carton Dimensions in Inches

The calculator can also accept imperial dimensions. Select inches before entering the package measurements.

Length: 24 in
Width: 16 in
Height: 14 in
Quantity: 20 cartons

Result Calculate total cubic meter volume automatically

CBM Explained

What Does CBM Mean in Shipping?

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

In international trade, CBM is widely used to describe how much physical space cargo occupies. It is particularly important in ocean freight because less-than-container-load shipments are commonly evaluated partly according to cargo volume.

A shipment can consist of cartons, bales, crates, rolls, pallets or other packages. The external volume of each shipping unit contributes to the total shipment CBM.

Formula

How to Calculate CBM from Centimeters

CBM formula using centimeters

If carton dimensions are measured in centimeters, divide each measurement by 100 to convert it to meters before multiplying.

CBM Formula Conversion

Measurement	Conversion
Length	Length in cm ÷ 100
Width	Width in cm ÷ 100
Height	Height in cm ÷ 100
CBM	Length in m × Width in m × Height in m

Quick Formula

CBM Formula Using Centimeters Directly

When all three measurements are in centimeters, the calculation can also be written as:

CBM = Length × Width × Height ÷ 1,000,000

For multiple identical cartons, multiply the result by the number of cartons.

Example

How to Calculate CBM for a Carton

Suppose a carton measures 60 cm × 40 cm × 35 cm. Converted to meters, the dimensions are 0.60 m × 0.40 m × 0.35 m.

The carton volume is therefore 0.084 CBM. If the shipment contains 100 identical cartons, the estimated total shipment volume is 8.40 CBM.

Unit Conversion

CBM Calculation with Different Measurement Units

Suppliers and buyers may receive carton dimensions in centimeters, millimeters, meters, inches or feet. All measurements must be converted to a consistent unit before calculating volume.

Common Length Conversion Reference

Unit	Equivalent in Meters
1 millimeter	0.001 m
1 centimeter	0.01 m
1 meter	1 m
1 inch	0.0254 m
1 foot	0.3048 m

Cubic Feet

CBM vs Cubic Feet

Some buyers and logistics teams use cubic feet instead of cubic meters. The calculator displays both measurements so shipment volume can be reviewed in metric and imperial formats.

Approximately 1 CBM equals 35.3147 cubic feet.

Ocean Freight

Why CBM Matters for Sea Freight

Ocean freight shipments are influenced by the amount of container space cargo occupies. CBM therefore becomes an important planning measurement when evaluating LCL and FCL shipping options.

LCL Freight Less-than-container-load shipments share container space with other cargo, so volume is a major commercial planning factor.
FCL Freight Full-container-load shipments require buyers to evaluate whether the packed goods can efficiently use the available container space.
Freight Comparison Knowing shipment CBM allows buyers to request more meaningful preliminary quotations from freight providers.
Packing Optimization Comparing carton designs can reveal opportunities to reduce wasted volume.

LCL Shipping

How CBM Is Used for LCL Freight

LCL — less than container load — is commonly used when a shipment does not require an entire shipping container. Cargo from multiple shippers is consolidated into one container.

The shipment's volume is therefore an important part of freight planning. However, carriers and forwarders can apply minimum charges, weight-versus-measurement rules, origin fees, destination fees and other commercial conditions.

This calculator estimates physical shipment volume only and does not generate a freight quotation.

FCL Shipping

CBM and Full Container Loading

Container nominal volume provides a useful reference, but the theoretical internal cubic capacity should not be treated as the exact amount of cargo that can always be loaded.

Carton dimensions, carton orientation, irregular product shapes, pallets, loading method, weight distribution, container door dimensions and unavoidable empty spaces can reduce practical utilization.

Use a dedicated Container Loading Calculator after calculating individual carton CBM.

Container Reference

Typical Container Volume Reference

The following figures are general planning references. Actual internal dimensions and usable capacity can vary by container specification and operator.

Approximate Container Cubic Capacity

Container	Approximate Internal Volume	Planning Note
20 ft Standard	About 33 CBM	Actual usable cargo volume is usually lower
40 ft Standard	About 67 CBM	Packing configuration affects utilization
40 ft High Cube	About 76 CBM	Greater internal height than standard 40 ft
45 ft High Cube	About 86 CBM	Availability depends on route and carrier

Important

Container Capacity Is Not Simply Total CBM

A shipment showing 70 CBM does not automatically mean it will fit perfectly into a container with a nominal volume near 76 CBM.

Physical loading depends on carton dimensions and how efficiently those dimensions fit within the container. Cargo can leave unusable voids even when mathematical volume appears sufficient.

Air Freight

CBM and Air Freight Are Different from Volumetric Weight

CBM measures physical volume. Air freight and courier services often calculate volumetric or dimensional weight using package dimensions and a carrier-specific divisor.

Therefore, CBM can help describe cargo volume, but it should not be used as a substitute for dimensional-weight calculations when estimating air or courier freight.

Chargeable Freight

CBM vs Actual Weight vs Chargeable Weight

Shipping calculations can involve several different measurements that should not be confused.

Common Freight Measurements

Measurement	Meaning
CBM	Physical cubic volume of the shipment
Net Weight	Weight of the products without transport packaging
Gross Weight	Product plus shipping packaging
Volumetric Weight	Dimension-based weight calculation used by many carriers
Chargeable Weight	Weight basis used by the carrier for freight billing

Packaging Efficiency

How Better Carton Design Can Reduce CBM

Even small reductions in carton dimensions can create meaningful freight savings when multiplied across hundreds or thousands of cartons.

Optimize carton dimensions Design cartons around the actual packed product instead of leaving unnecessary void space.
Improve product folding Textiles can often be folded or compressed differently without affecting product quality.
Review pieces per carton Changing the number of units per carton can sometimes improve total packing efficiency.
Avoid excessive packaging Unnecessary internal packaging can increase both product cost and shipment volume.
Test export packing A physical packing trial can reveal whether theoretical carton dimensions are realistic.

Home Textiles

Using CBM for Home Textile Shipments

CBM is particularly important in home textiles because many products are relatively bulky compared with their weight. Cushions, pillow inserts, quilts, duvets, rugs and certain soft furnishings can occupy significant volume.

Cushion Covers Usually compact without inserts, but retail packaging and carton configuration still affect total volume.
Cushion Inserts Can be highly volumetric and may require compression or vacuum packing.
Rugs & Carpets Rolled or folded packing dimensions strongly affect container utilization.
Throws & Blankets Folding and compression method can materially influence carton dimensions.
Bedding Quilts, comforters and duvet inserts can occupy substantial volume relative to weight.
Curtains Packing can be relatively dense, but hanger packs, retail boxes and presentation packaging may increase volume.

Buying

Why Importers Should Ask Suppliers for Packing Details

A product price alone does not tell a buyer what the shipment will cost to move internationally. Packing configuration can significantly influence freight economics.

Before finalizing an order, buyers should request estimated or confirmed packing specifications from the supplier.

Carton dimensions Request external length, width and height after packing.
Pieces per carton Understand how many saleable units are packed into each shipping carton.
Carton quantity Determine the expected total number of cartons.
Gross carton weight Weight is needed alongside volume for freight planning.
Packing method Confirm whether products are folded, rolled, compressed, boxed or vacuum packed.
Palletization If pallets are used, calculate the final palletized dimensions rather than carton dimensions alone.

Pallets

How to Calculate CBM for Palletized Cargo

If cartons are stacked onto pallets and the freight provider handles the shipment as palletized cargo, calculate volume using the final outside pallet dimensions after stacking and wrapping.

Multiply pallet length × pallet width × loaded pallet height, then multiply by the number of identical pallets.

Do not calculate only the individual carton volume if the pallet footprint or stacking arrangement creates additional shipment volume.

Irregular Cargo

Calculating CBM for Irregular or Cylindrical Packages

This standard CBM calculator treats each shipping unit as a rectangular box using its maximum outside length, width and height. This approach is appropriate for conventional cartons and provides a conservative bounding-box estimate for many irregular packages.

For cylinders, rolls or unusual shapes, a freight provider may use bounding dimensions or a different measurement method depending on the service and packing arrangement.

Sourcing Costs

CBM Helps Buyers Estimate Freight Cost per Product

Once total freight cost is known, buyers can divide freight across the number of saleable units to estimate freight cost per piece.

This is particularly useful when building a landed-cost model because a low factory price can become less attractive if the product occupies excessive shipping volume.

Cost Comparison

Compare Products Using CBM per Unit

Buyers can calculate approximate CBM per saleable unit by dividing carton CBM by the number of products packed in each carton.

This can reveal meaningful differences between products with similar factory prices but very different freight-space requirements.

Accuracy

Why Actual Shipment CBM Can Differ from the Calculator

The calculator uses the exact numbers entered by the user, but real shipment volume can differ if packed dimensions change during production.

Carton bulging Soft goods can push carton panels outward after packing.
Packing compression Vacuum or compression packing may reduce final carton dimensions.
Manufacturing variation Product dimensions and folding can affect final carton packing.
Protective material Corner protection, inner boxes and wrapping can increase external dimensions.
Pallets Palletization can create a different overall shipment footprint.

Important

CBM Is a Planning Measurement, Not a Freight Quote

The CBM Calculator estimates physical shipment volume from the dimensions and quantity entered. It does not calculate freight price, carrier chargeable weight, container-fit guarantee, customs charges or destination fees.

Use confirmed packed dimensions and gross weights when requesting final freight quotations from a freight forwarder or carrier.

For importers & buyers

Before Requesting a Freight Quote

Accurate freight enquiries require more than total CBM. Send the freight provider complete packing and shipment information whenever possible.

Use final packed dimensions

Estimated product dimensions and external carton dimensions are not the same.

Provide gross weight

Freight providers normally need both cargo volume and gross shipment weight.

State carton quantity

Provide the expected number of cartons, bales, rolls, crates or pallets.

Confirm pickup location

Origin location affects transport, consolidation and freight pricing.

Provide destination

State destination port, airport or delivery location.

Confirm freight mode

Ocean LCL, ocean FCL, air freight and courier services use different commercial calculations.

Source with Primeval

Planning a Home Textile Shipment from India?

Primeval helps international buyers source home-textile products from India while evaluating product specifications, MOQ, packing and commercial requirements.

Use the CBM Calculator to estimate shipment volume, then submit your product requirement for actual manufacturing and sourcing discussions.

Cushions and cushion covers
Rugs and carpets
Curtains
Throws and blankets
Bedding products
Kitchen textiles
Bath textiles
Private-label products
Custom packaging requirements
MOQ and factory-pricing discussions
Export packing planning
Shipment preparation support

Buyer questions

CBM Calculator FAQs

Helpful answers about calculations, sourcing estimates and commercial planning.

What does CBM mean?

CBM means cubic meter. It is a measurement of volume commonly used in shipping, freight and logistics.

How do I calculate CBM?

Convert length, width and height to meters and multiply them together. For multiple identical cartons, multiply the carton CBM by the number of cartons.

What is the CBM formula?

CBM = Length in meters × Width in meters × Height in meters. For multiple packages, multiply the result by the package quantity.

How do I calculate CBM from centimeters?

Multiply length × width × height in centimeters and divide by 1,000,000. Then multiply by the number of cartons if required.

How do I calculate CBM from millimeters?

Convert each dimension from millimeters to meters by dividing by 1,000, then multiply length × width × height.

How do I calculate CBM from inches?

Convert each inch measurement to meters by multiplying by 0.0254, then multiply the converted length, width and height.

How many cubic feet are in one CBM?

One cubic meter is approximately 35.3147 cubic feet.

What is CBM per carton?

CBM per carton is the cubic-meter volume occupied by one packed carton based on its external length, width and height.

How do I calculate total shipment CBM?

Calculate the CBM of one carton and multiply that value by the total number of identical cartons.

Should I use internal or external carton dimensions?

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

Does carton bulging affect CBM?

Yes. If a packed carton bulges beyond its nominal dimensions, the actual external measurements can increase shipment volume.

Is CBM the same as weight?

No. CBM measures volume, while kilograms or pounds measure physical weight.

Is CBM the same as volumetric weight?

No. CBM is a volume measurement. Volumetric weight converts package dimensions into a calculated weight using a carrier-specific divisor.

Is CBM used for sea freight?

Yes. CBM is widely used in ocean freight planning, particularly for LCL shipments and container-space analysis.

Is CBM used for air freight?

Cargo volume is relevant to air freight, but carriers commonly calculate volumetric or dimensional weight rather than pricing solely from CBM.

What is LCL shipping?

LCL means less than container load. Multiple shippers' cargo is consolidated into a shared container when individual shipments do not require a full container.

What is FCL shipping?

FCL means full container load. A shipper books a full container rather than sharing container space with other LCL cargo.

How many CBM fit in a 20 ft container?

A 20 ft standard container has a nominal internal cubic capacity of roughly 33 CBM, but practical cargo loading is usually lower because of carton arrangement, empty spaces, door dimensions and weight restrictions.

How many CBM fit in a 40 ft container?

A standard 40 ft container has nominal internal volume of roughly 67 CBM, but actual usable cargo volume depends on packing configuration and weight.

How many CBM fit in a 40 ft high cube container?

A 40 ft high cube container has nominal internal volume of roughly 76 CBM. Practical loading capacity can be lower.

If my cargo is 30 CBM, will it fit in a 20 ft container?

Not necessarily. Mathematical cargo volume alone does not guarantee physical fit because carton dimensions, stacking pattern, orientation, pallets, voids and weight limits affect loading.

Can this calculator determine how many cartons fit in a container?

No. This page calculates shipment volume. Use a Container Loading Calculator for a volume-based carton-capacity estimate.

How do I calculate pallet CBM?

Measure the final loaded pallet length, width and height, convert them to meters, multiply them together and then multiply by the number of pallets.

Can I calculate CBM for rugs or carpets?

Yes, if you know the final packed length, width and height of the roll, bale, carton or package. For irregular cylindrical rolls, confirm the freight provider's measurement method.

Can I calculate CBM for cushion covers?

Yes. Use the final packed carton dimensions and total carton quantity rather than the dimensions of an individual cushion cover.

Why is CBM important for importers?

CBM helps importers estimate shipment volume, compare packing options, discuss freight requirements and understand how much container space their products may occupy.

Can reducing carton size reduce freight cost?

Potentially. More efficient packing can reduce total shipment volume, although actual freight savings depend on the carrier, freight mode, shipment weight and commercial tariff.

Does this calculator calculate freight cost?

No. It calculates physical volume only. Freight rates also depend on route, carrier, weight, service type, surcharges, origin charges and destination charges.

Is calculated CBM suitable for a final booking?

Use confirmed final packed dimensions and weights for freight bookings. Calculator results based on estimates should be treated as preliminary.

Continue calculating

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Source Home Textiles from India

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Share your product requirements, quantity, packing specifications and destination with Primeval. Move from an estimated CBM to a real home-textile sourcing and manufacturing discussion.

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