Weight Charge

What is a Weight Charge?

A weight charge is a freight cost calculated using the shipment’s chargeable weight, rather than a flat fee or a purely volume-based rate. In practice, carriers determine whether actual (gross) weight or volumetric (dimensional) weight is higher, then price the move using that figure. This approach is especially common in air freight, where payload limits and fuel economics make weight a primary driver of cost.

Knowing how chargeable weight works helps shippers forecast costs more accurately and make smarter packing decisions. Carriers benefit too, because it supports fair pricing based on the capacity a shipment consumes, whether that constraint is weight or space.

How is Weight Charge Calculated?

Carriers calculate the weight charge by first working out the shipment’s actual weight and its volumetric (or dimensional) weight. The actual weight is the amount the shipment weighs on a scale. The volumetric weight is calculated from the shipment’s dimensions to reflect the space it occupies, usually by multiplying length, width, and height, then dividing by a carrier-specific factor.

Once both figures are calculated, the carrier charges based on whichever is higher. This ensures pricing reflects whether the shipment is heavy or simply large and space consuming.

Actual vs. Volumetric Weight

Carriers compare both measures to avoid underpricing bulky, lightweight freight that consumes valuable space:

• Actual weight: Best reflects dense cargo that reaches payload limits quickly.

• Volumetric weight: Best reflects light cargo that “cubes out” before it gets heavy.