Free Freight Planning Tool Shipping & Logistics

Carton CBM Calculator

Calculate carton volume and total shipment CBM in seconds.

Enter the external carton dimensions and number of cartons to calculate approximate cubic volume for freight planning, container loading and export shipment preparation.

This tool is designed for importers, exporters, sourcing teams, wholesalers, retailers and logistics professionals working with home textiles, rugs, cushions and other merchandise.

Free to use Instant estimate Built for sourcing & trade

CBM Shipment volume

m³ Cubic meter calculation

B2B Built for freight planning

Carton Length

Enter the external length of one packed carton.

Carton Width

Enter the external width of one packed carton.

Carton Height

Enter the external height of one packed carton.

Number of Cartons

cartons

Enter the total number of cartons in the shipment.

Use Packed Carton Dimensions

For freight planning, use the actual external dimensions after the carton is packed and closed. Bulging, compression, straps, corner protectors or pallets can affect real shipment volume.

Volume Estimate

Carton & Shipment Volume

Enter carton dimensions

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

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 is one of the most important measurements used in international freight and container planning. It represents the cubic-meter volume occupied by cargo and is commonly used when evaluating sea freight, LCL shipments, container capacity and warehouse space.

Primeval's Carton CBM Calculator helps importers, exporters, sourcing teams and logistics professionals calculate the volume of one carton and the total cubic volume of an entire shipment using carton length, width, height and quantity.

The calculator is particularly useful when planning home-textile shipments such as cushion covers, rugs, throws, bedding, curtains and other products packed in export cartons.

The result is a geometric volume estimate. Actual freight volume can be affected by palletization, carton deformation, loading arrangement, non-stackable cargo and carrier measurement rules.

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 longest external side of the finished, packed carton. Use the actual shipment dimensions rather than the manufacturer's flat carton specification.

Measure carton width

Enter the external width of the packed carton using the same unit basis as the other dimensions.

Measure carton height

Enter the final external height after the products are packed and the carton is closed.

Enter the number of cartons

Add the total carton quantity in the planned shipment.

Calculate CBM per carton

The calculator converts centimetres into metres and multiplies length × width × height to determine cubic metres for one carton.

Review total shipment CBM

The individual carton CBM is multiplied by the number of cartons to estimate total shipment volume.

CBM means cubic metres. When carton dimensions are entered in centimetres, divide each dimension by 100 to convert it to metres before multiplying the three measurements.

Formula

CBM per Carton = Length (m) × Width (m) × Height (m)

What the values mean

Carton Length: External packed carton length converted to metres.
Carton Width: External packed carton width converted to metres.
Carton Height: External packed carton height converted to metres.
Carton Quantity: Total number of cartons in the planned shipment.
Total Shipment CBM: CBM per carton multiplied by the total carton quantity.

Practical examples

Carton CBM Examples

See how typical values translate into a useful planning estimate.

Example 1

60 × 40 × 35 cm Carton

A common export carton can be converted from centimetres into metres before calculating its cubic volume.

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

Result 0.084 CBM per carton

Example 2

100 Cartons at 0.084 CBM Each

Total shipment volume is calculated by multiplying the volume of one carton by the number of cartons.

CBM per Carton: 0.084 CBM
Quantity: 100 cartons

Result 8.40 CBM total shipment volume

Example 3

50 × 40 × 30 cm Carton

Smaller carton dimensions can reduce shipment volume when packing efficiency remains acceptable.

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

Result 0.060 CBM per carton

Example 4

200 Cartons for an Export Shipment

Carton volume becomes particularly important when estimating whether a shipment is suitable for LCL or FCL transportation.

Carton CBM: 0.060 CBM
Quantity: 200 cartons

Result 12.00 CBM total shipment volume

CBM Basics

What Does CBM Mean in Shipping?

CBM stands for cubic metre and represents the volume occupied by cargo. One CBM equals a cube measuring one metre long, one metre wide and one metre high.

International freight providers often use CBM when quoting LCL ocean freight, estimating container utilization and evaluating cargo space requirements.

For cartons, CBM is calculated from the external packed dimensions rather than the dimensions of the product inside.

Formula

How to Calculate CBM from Carton Dimensions

If your carton dimensions are in metres, multiply length × width × height. If they are in centimetres, you can either convert every dimension to metres first or divide the centimetre product by 1,000,000.

CBM Formula by Dimension Unit

Dimension Unit	Formula
Meters	Length × Width × Height
Centimeters	Length × Width × Height ÷ 1,000,000
Millimeters	Length × Width × Height ÷ 1,000,000,000

Worked Example

Example: How to Calculate CBM for a 60 × 40 × 35 cm Carton

A carton measuring 60 × 40 × 35 cm can first be expressed as 0.60 × 0.40 × 0.35 metres.

Multiplying these dimensions gives 0.084 CBM per carton. If a shipment contains 100 identical cartons, total volume is approximately 8.40 CBM.

Freight Planning

Why CBM Matters for Importers and Exporters

Shipment volume is a key logistics variable because freight cost is not always determined by cargo weight alone. Lightweight but bulky products can occupy substantial container or vehicle space.

Ocean LCL freight Consolidated sea shipments are commonly evaluated using shipment volume and applicable freight rules.
Container planning Total carton CBM helps buyers estimate how much nominal container volume a shipment may require.
Air freight Carton dimensions are used for dimensional or volumetric-weight calculations.
Warehousing Volume helps estimate storage requirements for incoming and outbound goods.
Truck utilization Carton volume and dimensions affect vehicle-space planning.
Cost comparison Knowing total volume allows buyers to compare freight scenarios more intelligently.

Packaging

Use External Packed Carton Dimensions, Not Product Dimensions

CBM calculations should use the final external dimensions of the packed shipping carton. Product dimensions alone do not account for folding, protective materials, polybags, internal packing, void space and carton construction.

Measure cartons after products are packed whenever accurate logistics data is required.

Carton Planning

Common Carton Sizes and Their CBM

The figures below are mathematical volume examples. Actual carton suitability depends on product weight, protection and shipping conditions.

Carton CBM Reference

Carton Size	CBM per Carton	100 Cartons
40 × 30 × 30 cm	0.036 CBM	3.60 CBM
50 × 40 × 30 cm	0.060 CBM	6.00 CBM
60 × 40 × 35 cm	0.084 CBM	8.40 CBM
60 × 45 × 40 cm	0.108 CBM	10.80 CBM
70 × 50 × 40 cm	0.140 CBM	14.00 CBM
80 × 50 × 45 cm	0.180 CBM	18.00 CBM

Home Textiles

Why Carton CBM Is Important for Home Textile Shipments

Home textiles often have a relatively high volume compared with their product value or weight. Cushions, bedding, throws and certain rugs can occupy significant carton space unless compressed or packed efficiently.

Cushion covers Flat-packed covers generally allow efficient carton utilization.
Filled cushions Filled products can be much more volumetric and may require compression.
Bedding Comforters, duvets and bulky bedding products can create high CBM unless vacuum or compression packing is suitable.
Throws Folded thickness and retail packaging influence carton utilization.
Rugs Rolled or folded rugs require dimensions to be evaluated according to the actual shipping pack.
Curtains Packaging style, header construction and retail packs can influence carton density.

Packing Efficiency

How Better Packing Can Reduce CBM

Reducing unnecessary shipment volume can improve logistics efficiency, but packaging must still protect the product and meet buyer requirements.

Optimize pieces per carton Adjust carton quantity to improve internal space utilization without exceeding safe gross weight.
Reduce excessive void space Oversized cartons can increase CBM without adding product value.
Standardize carton sizes Consistent cartons may simplify stacking, palletization and warehouse handling.
Review retail packaging Bulky individual packaging can significantly increase export-carton volume.
Use compression carefully Vacuum or compression packing can reduce volume for suitable textile products but may not be appropriate for every material.
Protect product quality Never reduce carton size to the point that products become crushed, deformed or damaged.

Container Planning

CBM Does Not Equal Exact Container Capacity

A container has a nominal internal cubic volume, but the entire theoretical volume is rarely available for cargo. Carton dimensions, loading orientation, door size, pallets, voids, cargo weight and practical handling requirements all influence the actual number of cartons that fit.

For this reason, use CBM as an early planning metric and then use a dedicated container-loading calculation or physical load plan for more accurate estimates.

Container Reference

Typical Nominal Container Volume for Planning

The following values are general volume references used for early planning. Actual usable capacity varies by container specification and loading arrangement.

Typical Container Cubic Volume

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

LCL vs FCL

How CBM Helps When Comparing LCL and FCL Shipments

Smaller shipments may move as LCL, where cargo shares container space with other shippers. As shipment volume grows, a full-container option may become commercially relevant.

There is no universal CBM threshold at which FCL automatically becomes cheaper. Freight rates, origin charges, destination charges, lane, commodity, season and container availability all matter.

Use calculated CBM to request comparable LCL and FCL freight quotations rather than relying on a fixed rule.

Air Freight

CBM and Volumetric Weight Are Different Calculations

CBM measures physical cubic volume. Volumetric weight converts package dimensions into a billing weight using a carrier-specific divisor or conversion rule.

For air freight and courier shipments, a carrier may compare actual gross weight with volumetric weight and charge according to its applicable service rules.

Cubic Feet

CBM to Cubic Feet Conversion

Some buyers, warehouses and logistics providers work in cubic feet rather than cubic metres. One cubic metre is approximately 35.315 cubic feet.

The Primeval calculator therefore also displays the total shipment volume in cubic feet for easier international reference.

Pallets

How Palletization Can Change Shipment CBM

If cartons are loaded on pallets, the shipment's effective logistics footprint may differ from the sum of individual carton volumes. Pallet dimensions, stacking height, overhang, wrapping and non-stackable restrictions can create additional occupied space.

When requesting freight quotations for palletized cargo, provide the final pallet count, dimensions and gross weight rather than carton CBM alone.

Buyer Checklist

Information to Prepare Before Requesting a Freight Quote

Accurate shipment information helps freight forwarders provide more meaningful quotations.

Number of cartons Provide the total package quantity.
Carton dimensions Use external packed dimensions for each carton size.
Gross weight Provide total packed weight as well as individual carton weight where required.
Commodity Describe the products being shipped.
Origin Provide factory, city, port or pickup location.
Destination Provide destination port, airport, city or final delivery location.
Incoterm Clarify EXW, FOB, CIF or other agreed commercial terms where relevant.
Palletization State whether cartons will move loose-loaded or palletized.

Important

Carton CBM Is a Planning Estimate

The calculator uses geometric carton dimensions to estimate volume. Real carrier measurements, palletization, carton bulging, loading arrangement and packaging changes can affect final chargeable shipment volume.

For final freight booking, confirm actual packed dimensions and gross weight with your supplier and logistics provider.

For importers & buyers

Before Using CBM for Freight or Container Decisions

Calculated CBM is an excellent early planning metric, but commercial freight decisions should be based on final packing specifications and carrier quotations.

Use external dimensions

Measure the outside of the finished packed carton, not the internal box size.

Check all carton sizes

If the shipment contains multiple carton dimensions, calculate each carton group separately and combine the volumes.

Confirm gross weight

Container, truck and air-freight planning also requires shipment weight.

Account for pallets

Palletized cargo may occupy more space than loose cartons.

Avoid assuming 100% container utilization

Nominal container cubic volume is different from practical loading capacity.

Request actual freight quotations

Freight costs depend on lane, service, charges, weight, volume and current market conditions.

Source with Primeval

Planning a Home Textile Shipment from India?

Primeval helps international buyers source home textiles from India and prepare clearer product and commercial requirements. Share your product, order quantity, packaging requirements and destination market for a sourcing discussion.

Use the Carton CBM Calculator for preliminary shipment-volume planning, then confirm actual packaging and logistics with the selected manufacturer and freight provider.

Cushion covers
Rugs and carpets
Throws and blankets
Curtains
Bed linen
Duvet covers
Pillowcases
Kitchen textiles
Table linen
Bath textiles
Custom export packaging
Private-label production
Sampling support
Wholesale manufacturing
Export sourcing from India

Buyer questions

Carton CBM Calculator FAQs

Helpful answers about calculations, sourcing estimates and commercial planning.

What is CBM?

CBM stands for cubic metre and represents cargo volume. It is calculated by multiplying package length, width and height when dimensions are expressed in metres.

How do I calculate carton CBM?

Convert carton length, width and height to metres and multiply them together. For 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 shipment CBM?

Calculate CBM for one carton and multiply it by the number of identical cartons. For multiple carton sizes, calculate each group separately and add the totals.

How many CBM is a 60 × 40 × 35 cm carton?

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

How many CBM are 100 cartons of 60 × 40 × 35 cm?

If every carton measures 60 × 40 × 35 cm, 100 cartons occupy approximately 8.4 CBM theoretically.

Should I use inside or outside carton dimensions?

Use the final external dimensions of the packed carton for freight and shipment-volume planning.

Does carton CBM include weight?

No. CBM measures volume only. Gross weight should be calculated separately.

Is CBM the same as volumetric weight?

No. CBM is cubic volume. Volumetric weight converts package dimensions into a weight value using a carrier-specific formula.

Why do freight forwarders ask for CBM?

CBM helps determine how much cargo space a shipment occupies and is important for LCL freight, container planning, warehousing and other logistics decisions.

Can CBM be used for ocean freight?

Yes. CBM is commonly used in sea-freight planning, particularly for LCL shipments and container utilization estimates.

Can CBM be used for air freight?

CBM provides the package volume, but air freight commonly uses dimensional or volumetric weight calculations for billing.

How many cubic feet are in one CBM?

One cubic metre is approximately 35.315 cubic feet.

How do I convert CBM to cubic feet?

Multiply CBM by approximately 35.315 to estimate cubic feet.

How many CBM fit in a 20-foot container?

A 20-foot standard container has a nominal internal volume of roughly 33 cubic metres, but practical usable cargo volume is lower and depends on packing and loading.

How many CBM fit in a 40-foot container?

A 40-foot standard container has nominal internal volume of roughly 67 cubic metres, though practical cargo loading is lower.

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

A 40-foot high-cube container has nominal internal volume of roughly 76 cubic metres. Actual loading depends on carton dimensions and cargo arrangement.

Can I divide container CBM by carton CBM to know exactly how many cartons fit?

Not exactly. That provides a theoretical volume estimate only. Actual carton count depends on orientation, door dimensions, void space, pallets, weight limits and loading method.

Does palletization affect CBM?

Yes. Pallets, wrapping, stacking restrictions and unused space can increase the effective cargo footprint.

Can carton bulging change freight volume?

Yes. If packed cartons expand beyond their nominal dimensions, the actual measured volume can increase.

Can vacuum packing reduce CBM for textiles?

For suitable soft textile products, compression or vacuum packing can reduce packed volume, but product recovery, presentation and quality requirements should be considered.

Should I calculate each carton size separately?

Yes. If a shipment contains different carton sizes, calculate the CBM of each carton group and add all group totals.

Does this calculator calculate freight charges?

No. It calculates volume. Freight rates depend on route, freight mode, weight, volume, service level, surcharges and current carrier pricing.

Can this calculator be used for home textile exports?

Yes. It is useful for cushions, rugs, curtains, bedding, throws and other home-textile shipments packed in cartons.

Can this calculator be used by importers and sourcing companies?

Yes. It is designed for importers, exporters, wholesalers, retailers, sourcing teams and logistics professionals.

Is calculated CBM suitable for final freight booking?

Use the calculator for preliminary planning. Final bookings should use actual packed carton dimensions and gross shipment weight confirmed by the supplier.

Continue calculating

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Home Textile Sourcing & Export Planning

Planning an Order from India? Move from CBM to Actual Sourcing.

Share your products, specifications, quantities, packaging and target market with Primeval. Use the calculator for early shipment planning, then move to actual manufacturing and commercial discussions.

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