How to understnd Charging Weight?
Understanding Actual Weight VS. Volumetric Weight in Logistics
1. Actual Weight
Actual weight represents the true mass of a package, measured using standard units such as kilograms (kg) or pounds (lb). It is determined by weighing the item on a scale//This straightforward metric is primarily used for dense, heavy items (e.g., machinery parts, books) that occupy minimal space relative to their weight. Carriers rely on actual weight when it exceeds volumetric weight.
2. Volumetric Weight
Volumetric weight reflects the space a package occupies during transportation. It is a calculated value that converts the volume of a package into a “weight equivalent,” ensuring that lightweight but bulky items are priced appropriately.
The formula for volumetric weight varies slightly depending on the carrier and region, but the core principle remains consistent
Common divisors :
- Airfreight : Typically 5,000 (cm³/kg) or 166 (in³/lb).
- Couriers(e.g., DHL, FedEx) : Often use 5,000 for metric
- Roadfreight : May use divisors between 3,000 and 4,000 to prioritize space
Example :
Consider a box with dimensions 40 cm *30 cm *20 cm. Its volume is 24,000 cm³.
Volumetric weight = 24,000 / 5,000 = 4.8 kg (rounded up to 5 kg).
Purpose :
Volumetric weight ensures carriers are compensated fairly for transporting lightweight, bulky shipments (e.g., pillows, foam packaging). If a package’s volumetric weight exceeds its actual weight, the former is used to calculate shipping costs.
3. Chargeable Weight: Determining the Final Cost
Carriers’ bills are based on the greater value between actual weight and volumetric weight, known as the chargeable weight. This approach ensures fair pricing for both parties:
Heavy, dense item : The Actual weight is typically
Light, bulky items: Volumetric weight is
Case Study:
– A 10 kg toolbox (actual weight) with dimensions 30 cm * 20 cm * 20 cm:
Volumetric weight = (30*20*20)/5,000 = 2.4 kg → Chargeable weight = 10 kg.
– A 3 kg pillow packed in a 50 cm * 40 cm * 30 cm box:
Volumetric weight = (50*40*30)/5,000 = 12 kg → Chargeable weight = 12 kg.
Conclusion
Balancing actual weight and volumetric weight is essential for cost-effective logistics. Shippers who master this balance can optimize expenses, while carriers maintain profitability. As e-commerce and global trade continue to expand, this dual-weight system remains a cornerstone of fair and efficient shipping practices.