How to Calculate Shipping Cost from China to Nigeria (CBM & KG Explained)

One of the most common mistakes that importers make is not understanding how shipping costs are calculated.

Air Shipping Calculation

Air shipping is charged by:

  • Actual weight (kg)

  • Volumetric weight (length × width × height ÷ factor)

The higher one is used.

Sea Shipping Calculation (CBM)

Sea shipping uses CBM (Cubic Meter).

Formula:

Length × Width × Height (in meters)

Example:

A carton measuring:

  • 0.5m × 0.5m × 0.5m
    CBM = 0.125 CBM

Most cartons are either in cm or mm.

You would need to convert centimeters (cm) to m or millimeters (mm) to m first. In most cases, they tell you to divide by 1,000,000 or 1000,000,000, as the case may be.

If your carton has cm measurements:

50x50x50

The formula becomes

50x50x50/1,000,000 = 0.125 CBM

If your carton has mm measurements:

500X500X500

The formula becomes

500X500X500/1000,000,000 = 0.125 CBM

I believe it is clearer now.

Other Costs to Consider

  • Clearance

  • Handling

  • Local delivery

  • Delays

Knowing your landed cost helps you price correctly and avoid losses.

We have a new product called Balanx. It helps you to track landing costs, figure out your profits and loss, and then gives you recommendations on how to scale.