Introduction: It’s More Than Just Weight and Distance

Many shippers focus only on how much a shipment weighs or how far it travels, but logistics in 2025 is driven by a far more complex set of calculations. Understanding the real building blocks of freight costs can help your business avoid costly surprises, optimize finances, and better negotiate every shipment.

Gross Weight vs Net Weight : Why It Matters

• Gross Weight: The total weight of your goods, including all packaging, pallets, and crates.
• Net Weight: Only the weight of the goods themselves, without packaging.

Why do both matter? Customs duties and tariffs are typically calculated based on net weight, while most freight carriers bill you by gross weight. That means excess packaging adds cost without adding value and careful packing design can lower your shipping bill.

Chargeable Weight – The Real Cost Driver

Carriers don’t just look at how heavy your cargo is. They also consider how much space it takes up. In 2025, you’ll be charged for the greater of:

• Gross Weight (actual)
• Volumetric Weight (Dimensional Weight)

Formulas:

• Air Freight: Length × Width × Height (cm) ÷ 6,000
• Sea Freight (LCL): 1 CBM (cubic meter) = 1,000 KG (whichever is higher gets charged)

Example:
A 10 KG box (60 × 50 × 50 cm) has a volumetric weight of 25 KG—you’ll be charged for 25 KG, not 10 KG.

CBM (Cubic Meter) in Sea Freight: The Key LCL Metric

For Less than Container Load (LCL) sea shipments, CBM is critical.
Formula: Length × Width × Height (cm) ÷ 1,000,000 = CBM

Even if your cargo is light, you’ll be billed at least for the minimum 1 CBM or whichever is higher CBM or weight.

Example: Box, 120 × 80 × 100 cm = 0.96 CBM. If it weighs only 80 KG, the bill still rounds up to 1 CBM.

Volumetric vs. Actual Weight How Every Mode Treats It

• Airlines: Always charge by volumetric weight if it exceeds gross; cargo space is a premium.
• Shipping Lines: For LCL, whichever is higher; for FCL (full containers), it’s more about container size, with capped legal weight.
• Road Freight: Dependent on truck weight limits and space; high-volume, low-weight goods can still be pricey if they fill up the truck.

Common Freight Charge Mistakes to Avoid

• Assuming cost is only based on weight
• Ignoring the size of packaging, which drives up CBM
• Misunderstanding Incoterms, which sets who pays for what and where
• Overlooking local charges: customs clearance, documentation, and handling fees

The 2025 Freight Reality: Surcharges, Green Fees, and More

n today’s dynamic transport world, carriers tack on extras like fuel surcharges, congestion fees, and new for 2025, carbon levies and sustainability incentives. Expect:

• More granular enforcement of weight vs. CBM thresholds
• Adjustable rates tied to real-time capacity and route risk
• Digital freight quoting with live markets and spot surcharges

Smart shippers work these variables into their budgets, demand transparent quotes, and use logistics technology to monitor every cent.

Conclusion:

Freight charges are about much more than “how heavy.” Understanding and optimizing the balance of weight, size, and responsibility, as well as knowing your Incoterms and planning for local fees, makes all the difference.

Want help navigating your next shipment?
Get a digital, transparent shipping quote now from Sea Sky Cargo and put these cost-saving strategies to work.