How Freight Costs Are Calculated
Learn how freight companies calculate shipping costs using actual weight, CBM, and chargeable weight for air freight and LCL shipments.
Written by Hany Abdelaal
Founder & CEO – Live Freight Logistics Leader Since 2008.
https://www.live-freight.com/author/hany-abdelaal
Introduction
One of the most common questions importers and shippers ask is:
"How are freight costs calculated?"
Many businesses assume shipping costs are based solely on the physical weight of their cargo. In reality, freight pricing often depends on a combination of cargo weight, shipment volume, and chargeable weight.
Understanding these measurements can help businesses estimate shipping costs more accurately, compare transportation options, and avoid surprises when requesting freight quotations.
Importers requesting freight quotations should also understand the documentation required for international shipments.
Related Guide: Logistics Documentation for International Shipping
What Is Actual Weight (KG)?
Actual weight refers to the physical weight of cargo measured on a scale.
For example:
Cargo Weight: 500 KG
This measurement is important for:
Cargo handling
Transportation planning
Equipment requirements
Safety compliance
However, actual weight is not always the measurement used to calculate freight costs.
What Is CBM?
CBM stands for Cubic Meter and measures the amount of space occupied by cargo.
CBM Formula
CBM = Length \times Width \times Height
Example
1m × 1m × 1m = 1 CBM
CBM is commonly used for:
LCL Shipping
Warehousing
Inland Transportation
Freight Planning
Large shipments may have a low weight but occupy significant transportation space.
What Is Chargeable Weight?
Chargeable weight is the weight carriers use to calculate freight charges.
Rather than charging based only on physical weight, carriers compare different shipment measurements and select the value used for pricing.
The method differs between Air Freight & LCL shipping.
How Air Freight Costs Are Calculated
Air freight pricing is generally based on chargeable weight.
Airlines compare:
Actual Weight (KG)
Volumetric Weight
The higher value becomes the chargeable weight used for pricing.
Air Freight Volumetric Weight Formula
Volumetric\ Weight = \frac{Length \times Width \times Height\ (cm)}{6000}
Example
Actual Weight:
80 KG
Dimensions:
120 × 80 × 60 cm
Volumetric Weight:
120 × 80 × 60 ÷ 6000
= 96 KG
Since the volumetric weight (96 KG) is greater than the actual weight (80 KG), the shipment will be charged as 96 KG.
In air freight, the chargeable weight is always based on whichever is greater:
Actual Weight
Volumetric Weight
Businesses shipping urgent cargo should understand how airlines use chargeable weight when calculating air freight rates.
Related Service: Air Freight Services
Need a Fast Air Freight Quote?
Our team can calculate chargeable weight, review cargo dimensions, and provide accurate air freight pricing.
How LCL Shipping Costs Are Calculated
LCL (Less than Container Load) shipments are typically priced using a principle commonly known as W/M (Weight or Measure).
Carriers compare:
Cargo Weight
Cargo Volume (CBM)
The shipment is generally charged based on whichever measurement produces the higher freight value according to the applicable freight tariff.
Example 1
Cargo Volume:
1 CBM
Actual Weight:
200 KG
In many LCL pricing structures, 1 CBM is treated as equivalent to 1 metric ton (1000 KG) for freight rating purposes.
Because the shipment occupies 1 CBM of container space but weighs only 200 KG, pricing would typically be based on 1 CBM.
Example 2
Cargo Volume:
0.5 CBM
Actual Weight:
1200 KG
Because the shipment weight exceeds the equivalent volume rating, pricing may be based on the cargo weight rather than volume.
In LCL shipping, carriers evaluate both cargo volume and cargo weight before determining the applicable freight charge.
LCL shipping is often used for smaller shipments that do not require a full container while still providing flexible international transportation options.
Related Service: LCL Shipping Services
Air Freight vs LCL Shipping Example
| Item | Air Freight | LCL Shipping |
|---|---|---|
| Weight | 100 KG | 100 KG |
| Volume | 1 CBM | 1 CBM |
| Pricing Basis | Chargeable Weight | Weight or Measure |
| Main Factor | Weight + Volume | Volume or Weight |
Understanding these differences helps importers choose the most suitable transportation method based on shipment requirements.
Chargeable Weight vs CBM vs KG
| Measurement | Purpose |
|---|---|
| KG | Actual cargo weight |
| CBM | Cargo volume |
| Chargeable Weight | Weight used for freight pricing |
In simple terms, air freight charges are typically based on the greater value between actual weight and volumetric weight, while LCL shipping charges are commonly based on the greater value between cargo weight and cargo volume according to the applicable freight tariff.
Common Mistakes Importers Make
Assuming Freight Costs Depend Only on Weight
Many shippers focus only on cargo weight and ignore volume.
Ignoring Cargo Dimensions
Incorrect dimensions can result in inaccurate freight quotations.
Providing Incomplete Shipment Information
Accurate freight estimates require:
Cargo dimensions
Number of packages
Actual weight
Packaging details
Comparing Quotes Without Understanding Chargeable Weight
Different freight modes may use different pricing methodologies.
Understanding how freight costs are calculated helps businesses compare options more effectively.
Freight costs are only one part of the shipping process. Importers should also understand customs procedures before cargo arrives.
Related Guide: Customs Clearance Process in Egypt
Why Freight Quotes Can Differ
Two freight providers may receive the same shipment details but calculate costs differently depending on:
Service scope
Carrier selection
Routing
Transit time
Additional logistics requirements
Understanding these factors helps businesses evaluate quotations more effectively and make informed shipping decisions.
If you already have cargo dimensions and weight details, you can request a freight quotation for a more accurate cost estimate.
Why Understanding Freight Measurements Matters
Knowing the difference between KG, CBM, and chargeable weight helps businesses:
Estimate freight costs more accurately
Compare transportation options
Plan shipment budgets
Reduce quotation surprises
Improve logistics decision-making
Whether shipping by air freight or LCL sea freight, understanding these measurements is essential for effective freight planning.
Understanding freight calculations also helps businesses compare transportation options more effectively.
Not Sure How Your Shipment Will Be Charged?
Our team can calculate chargeable weight, evaluate cargo dimensions, and recommend the most suitable freight solution for your shipment.
Speak With a Freight Specialist
Related Resources
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