What is Chargeable Weight in Air Freight? Complete Guide

What is Chargeable Weight?

In air freight, you don't simply pay for how heavy your cargo is. Instead, you pay based on the chargeable weight — which is the higher of two values: the actual (gross) weight or the volumetric (dimensional) weight.

The Volumetric Weight Formula

Volumetric weight is calculated as:
Length (cm) × Width (cm) × Height (cm) ÷ 6000 = Volumetric Weight (kg)

Practical Example

Imagine you're shipping a box of Balinese handicrafts:

• Box dimensions: 80cm × 60cm × 50cm
• Actual weight: 15 kg
• Volumetric weight: 80 × 60 × 50 ÷ 6000 = 40 kg
• Chargeable weight: 40 kg (higher value applies)

So you'd be charged for 40 kg even though the box only weighs 15 kg physically.

Why Does This Rule Exist?

Airlines have limited cargo space on each flight. A large but lightweight box takes up valuable space that could carry heavier, denser freight. The volumetric weight formula ensures fair pricing based on space used, not just weight.

How to Minimize Chargeable Weight Costs

• Use efficient packaging — avoid unnecessarily large boxes. Right-size your packaging to the product.
• Choose dense cargo — if possible, pack items tightly to reduce volume
• Use flat-pack — disassemble products before shipping where possible
• Compare air vs sea — for large, light cargo, sea freight may be significantly cheaper

CBM vs Chargeable Weight

You may also see CBM (Cubic Meter) used — this is common for sea freight. For air, always use the 1:6000 formula. Some forwarders may use 1:5000 for certain services — always confirm with your forwarder.