Understanding CBM: How Cargo Volume is Calculated

What is CBM?

CBM stands for Cubic Meter — the standard unit used to measure the volume of cargo in sea freight.

How to Calculate CBM

The formula is simple:

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

For example, a carton that is 50cm × 40cm × 30cm = 0.5 × 0.4 × 0.3 = 0.06 CBM

Why CBM Matters

Shipping rates for sea freight are typically charged per CBM. The more volume your cargo takes up, the more you pay.

CBM vs Weight

Sometimes carriers charge based on weight rather than volume. The rule is: you pay whichever is higher — the actual weight or the volumetric weight.

Tips to Reduce Your CBM

• Compress packaging where possible
• Disassemble large items for shipping
• Use vacuum bags for soft goods

Conclusion

Understanding CBM helps you negotiate better rates and pack smarter. CB Cargo provides full CBM transparency for every shipment.