Notice of NMFC changes
The National Motor Freight Traffic Association (NMFTA) periodically reviews and updates NMFC item numbers used for commodity identification on Less Than Truckload (LTL) shipments. These updates usually happen three times per year.
Because the July update was so significant, the NMFTA reduced the number of reviews for 2025 to two, instead of the usual three. The second update, known as the 2025-2 update, is less extensive and went into effect on December 6, 2025.
We want to ensure you have the most accurate and up-to-date information to support your logistics needs. Please review the docket and contact your C.H. Robinson representative with any questions or concerns.
Please note: C.H. Robinson does not participate in or influence NMFTA’s changes.
NMFCs: What you need to know for 2025
- NMFC update for 2025: The NMFTA is simplifying freight classifications, especially for density-based items.
- Improved efficiency: Changes aim to reduce misclassifications and improve cost predictability.
- Shipper readiness: Businesses should audit freight data and adopt tools like electronic BOLs and dimensioners.
- NMFC lookup tool: Easily find your freight classifications and see how the 2025 NMFC changes may impact your shipments.
How freight class is determined
The NMFC system classifies commodities based on four main factors:
- Density: The space items occupy in the trailer and their weight. Lower density items typically have higher freight classes.
- Stowability: Items that are difficult to store, such as hazardous or very heavy shipments, receive higher freight classes.
- Handling: Freight requiring special handling is assigned a higher class.
- Liability: Perishable or easily damaged freight is given a higher class.
How to calculate freight density
Measure dimensions
Measure the length, width, and height of your total shipment in cubic inches
Convert to cubic feet
Convert that total to cubic feet (divide by 1,728 for quick conversion)
Weigh shipments
Determine the weight of the total shipment in pounds
Calculate density
Divide the total weight by total cubic feet of the shipment to get the lbs/ cubic ft
If you have several different shipments, use the freight density calculation for each individual piece. Add the cubic inch measurements for the pieces together to get the grand total, then convert to cubic feet for a grand total before dividing by weight.
NMFC 2025: What the freight experts say
Hear how supply chain experts break down changes to the NMFC density-based classification system that went into effect July 19, 2025—including what it means for your business, how to stay compliant, and how to avoid costly delays or fees.
Let us help you adapt to the NMFC changes efficiently
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Frequently asked questions
Understanding the ins and outs of density based freight class can help save you on your LTL shipping rates.
Q: What is freight class?
Freight class is a system used to categorize and price shipments based on four main factors: density, stowability, handling, and liability. It helps determine the cost of shipping freight. The classes range from 50 to 500, with lower numbers indicating lower costs.
For example, Class 50 includes durable items that fit on a standard pallet, while Class 500 includes high-value or low-density items.
Q: Why is freight class important?
There are a few reasons why freight class is important:
- Sets Standards: Freight class provides a standardized system that allows carriers to easily determine shipping costs. This standardization helps shippers compare rates from different carriers more effectively.
- Reduces Shipping Costs: By accurately determining the correct freight class for a commodity, shippers can avoid being overcharged for shipping. This ensures that they pay a fair price based on the characteristics of their shipment.
- Ensures Accuracy: Freight class is used to assess the level of liability for a shipment. This means that if a shipment is damaged during transit, the insurance company can determine fair compensation for the shipper based on the freight class.