CBM Calculator
Quickly compute cubic meters for single or multiple boxes. Unit-aware, container fit hints included.
Result
- CBM = (L × W × H) ÷ 1,000,000 when using centimeters.
- Use Advanced for inches/feet or multiple boxes.
Result
- 20 ft: ~33.2 m³
- 40 ft: ~67.7 m³
- 40 ft High Cube: ~76.3 m³
Disclaimer: These are volumetric estimates only. Actual capacity depends on box orientation, palletization, and weight limits.
What is CBM and Why It Matters in Shipping?
CBM (Cubic Meter) is a standard unit used to measure the volume of a shipment. Whether you’re importing goods, sending bulk packages, or calculating warehouse space — knowing the CBM helps you estimate costs, choose the right container size, and plan logistics more efficiently.
CBM Formula
To calculate CBM:
CBM = (Length × Width × Height × Quantity) ÷ 1,000,000
This formula is used when measurements are in centimeters. For inches or feet, the calculator automatically converts them into meters before calculating the final volume in CBM.
How to Estimate Container Fit
Not sure how much space your shipment will take? Use this CBM calculator to estimate how many cubic meters your goods occupy and what type of shipping container you might need:
| Container Type | Approximate Capacity |
|---|---|
| 20 ft container | 33 CBM |
| 40 ft container | 67 CBM |
| 40 ft High Cube | 76 CBM |
This helps freight forwarders, exporters, and importers save time and avoid under- or over-booking container space.
Who Should Use This Tool?
- Importers & Exporters
- Freight Forwarders
- Warehouse Managers
- Online Sellers / E-Commerce Brands
- Anyone shipping goods in bulk
Why Use This CBM Calculator?
- Supports multiple units (cm, inch, ft)
- Allows bulk entry of multiple boxes
- Instantly shows CBM and container fit
- 100% browser-based and mobile-friendly
- No signup or installation required
Save Time, Avoid Errors
Manual CBM calculation can be tedious and error-prone. This free calculator helps you get it right the first time — so you can focus on shipping smarter, not harder.
Realism Note
This CBM (Cubic Meter) calculator is a simplified estimation tool meant to help users get a quick idea of cargo volume and container fit. Real-world logistics may vary based on packaging, stacking, irregular shapes, empty space, and shipping company policies.
Disclaimer
This calculator provides rough estimates based on standard formulas and assumptions. Always consult your logistics provider or freight forwarder for precise packaging and shipping recommendations. Indiagraphs is not responsible for any discrepancies or decisions based solely on this tool.
CBM Calculator – Frequently Asked Questions
What units can I use to calculate CBM?
You can use centimeters, inches, or feet. The calculator will automatically convert all measurements into meters before computing the final CBM.
How accurate is the CBM result?
This calculator uses standard formulas for volume calculation. Accuracy depends on the precision of your input measurements. Real-world results may vary due to packaging, palletizing, and stacking.
Does CBM affect shipping cost?
Yes. Many freight companies calculate charges based on the greater of actual weight or dimensional weight (volume). Higher CBM can increase shipping cost, especially for bulky but lightweight goods.
How do I calculate CBM for multiple boxes?
Enter the dimensions and quantity for each box type. The calculator will multiply each box’s CBM by its quantity and give you a total CBM.
Can CBM help me choose the right shipping container?
Absolutely. Once you know your shipment’s total CBM, you can compare it with standard container capacities to avoid overpaying or running out of space.
What is dimensional weight and how is it different from CBM?
Dimensional weight is a shipping calculation that considers both the volume and the actual weight of the cargo. CBM measures only the volume, not the weight.
How do irregular shapes affect CBM calculation?
CBM calculations work best for rectangular or cubic items. For irregular shapes, you may need to measure the maximum length, width, and height to get an approximate volume.
Why is my shipping company’s CBM different from mine?
They may use slightly different rounding methods, include pallet size in the measurement, or apply packaging allowances. Always confirm their measurement method.
Is CBM used for air freight too?
Yes, but in air freight, volumetric weight is often more important. CBM can still be calculated, but charges are usually based on a conversion of CBM into a weight equivalent.
How can I reduce my shipment’s CBM?
Use compact packaging, remove unnecessary void space, and consider flat-packing items when possible to reduce overall volume.