How volumetric weight is calculated and why it matters
The basic LTL pricing principle: length × width × height × coefficient. Worked examples.
May 1, 2026
In groupage shipments, pricing is based on volumetric weight, not just mass. This distributes the cost of the trip fairly: light but bulky cargo pays for the space it occupies, not only the kilograms.
Formula
Volumetric weight (kg) = Length (m) × Width (m) × Height (m) × coefficient
Coefficients by transport type:
- Road — 333 (1 m³ = 333 kg)
- Air — 167 (1 m³ = 167 kg, stricter)
- Sea container — 1000 (the larger of weight or volume is used)
The greater of the actual and volumetric weight is used for the tariff.
Example
Five boxes of 60×40×40 cm with a total physical weight of 50 kg.
- One box volume: 0.6 × 0.4 × 0.4 = 0.096 m³
- Total volume: 5 × 0.096 = 0.48 m³
- Volumetric weight: 0.48 × 333 = 159.84 kg
The cargo physically weighs 50 kg but is rated as 160 kg.
How to lower the volumetric weight
- Pack tightly without empty spaces.
- Avoid packaging with too much air.
- Palletise at minimum height.
- Combine into one shipping unit.