Finance

CBM Calculator

Free CBM calculator — enter carton dimensions and weight to get volume in cubic metres, volumetric weight (IATA /6000 air, /5000 courier or /4000 selectable), chargeable weight and an estimated container fit (20ft about 33 CBM, 40ft about 67 CBM, 40ft high-cube about 76 CBM).

Short answer: CBM Calculator — CBM, volumetric weight and container fit for any shipment. Free CBM calculator — enter carton dimensions and weight to get volume in cubic metres, volumetric weight (IATA /6000 air, /5000 courier or /4000 selectable), chargeable weight and an estimated container fit (20ft about 33 CBM, 40ft about 67 CBM, 40ft high-cube about 76 CBM). It answers “cbm calculator volumetric weight container fit”. Who it is for: Importers and exporters quoting freight; Etsy, Amazon and Shopify sellers shipping cartons overseas; Freight forwarders doing a quick volume check. It runs entirely in your browser — no sign-up, no account, no email and no upload — and every result can be exported as a dated PDF report.

✔ Price: free, unlimited use, no rate limits
✔ Sign-up: not required
✔ Privacy: all math runs client-side, nothing is uploaded
✔ Export: one-click PDF report (2026 rates)

Number of cartonsLength per carton (cm)Width per carton (cm)Height per carton (cm)Actual weight per carton (kg)Volumetric divisorContainer

Volume per carton

0.096 CBM

Total volume

9.60 CBM

Volumetric weight (total)

1600.0 kg

Actual weight 2000.0 kg

Chargeable weight

2000.0 kg

Higher of actual vs volumetric

Containers needed

29% of the last container filled (estimate)

Container capacities (about 33 / 67 / 76 CBM) are usable-volume estimates — real loadable volume depends on carton shape, palletising and the carrier's own limits. Freight is quoted on chargeable weight or volume, whichever your carrier uses; confirm with your forwarder before booking.

Estimate only — not tax, legal or immigration advice. Rates change; confirm the current figure with the official authority (CRA, Revenu Quebec, ATO, your state revenue office, IRCC or IRD) before you rely on it.

Popular long-tail searches from Canada and Australia — jump straight to the tool.

Long-tail searches trending across the UK, New Zealand & Ireland — click to open the matching tool.

→ Browse all free tools → Explore by category → Read the blog

Who is this tool for?

✔ Importers and exporters quoting freight
✔ Etsy, Amazon and Shopify sellers shipping cartons overseas
✔ Freight forwarders doing a quick volume check
✔ Small businesses comparing air versus sea freight
✔ Anyone packing a container for a house move

How to use CBM Calculator

Enter the number of cartons and each carton's length, width and height in centimetres.
Enter the actual weight per carton in kilograms.
Pick the volumetric divisor your carrier uses (/6000 for air, /5000 for courier, /4000 for some carriers).
Read total CBM, volumetric weight, chargeable weight and the estimated container fit.

Frequently asked questions

Who is this CBM calculator for?

Anyone shipping cartons — importers, exporters, marketplace sellers and movers — who needs to know how much space a shipment takes and what weight the carrier will charge for.

Who should not rely on this calculator alone?

Shippers with irregular shapes, palletised loads, dangerous goods or carrier-specific rounding rules. Real loadable volume depends on carton shape and stacking, so confirm the final figure with your forwarder.

How do I calculate CBM?

Multiply length × width × height in metres for one carton, then multiply by the number of cartons. In centimetres: length × width × height ÷ 1,000,000 = CBM per carton.

What is volumetric weight?

A carrier's way of charging for light, bulky freight: length × width × height (cm) ÷ divisor. Air freight commonly uses /6000 (IATA), couriers often use /5000, and some carriers use /4000. The carrier charges the higher of actual weight and volumetric weight.

What is chargeable weight?

The weight your freight is actually billed on: whichever is higher, the shipment's actual weight or its volumetric weight. That is the figure this tool highlights.

How many CBM fit in a container?

As usable-volume estimates: about 33 CBM in a 20ft container, about 67 CBM in a 40ft container and about 76 CBM in a 40ft high-cube. Real capacity is lower once pallets, carton shapes and loading gaps are counted.

Does this calculator give me a freight price?

No. Freight rates depend on route, carrier, fuel surcharges and service level, and this tool deliberately does not invent rates. Use the CBM and chargeable weight here to get a quote from your forwarder.

Cbm calculator volumetric weight container fit?

Use the CBM Calculator above: CBM, volumetric weight and container fit for any shipment. Free CBM calculator — enter carton dimensions and weight to get volume in cubic metres, volumetric weight (IATA /6000 air, /5000 courier or /4000 selectable), chargeable weight and an estimated container fit (20ft about 33 CBM, 40ft about 67 CBM, 40ft high-cube about 76 CBM).