NMFC Class

NMFC Freight Classes

Freight classes are catalogued by the National Motor Freight Classification tariff. Less-than-truckload shipments are typically rated based on their class. The class of your freight is determined by its contents. Different types of products have different costs associated with them, based primarily on their value and density, fragility, and handling characteristics of the product.

There are 18 possible freight classes ranging from Class 50 (the least expensive) to Class 500 (the most expensive). It’s important to have the correct class—too high and your rate will be costly. Too low, and a carrier can reclassify your shipment to a higher class, which will result in a rate change.

Below is a table the National Classification Committee has published to identify the freight class that relates to average density. The density/class relationships in the guidelines presume that there are no unusual or significant stow ability, handling or liability characteristics, which would give those characteristics additional or different “weight” in determining the appropriate class. National Motor Freight Classification density guidelines: Calculated density with freight class conversion.

50 = class 55 30 = class 60 22.5 = class 65 15 = class 70 13.5 = class 77.5
12 = class 92.5 9 = class 100 8 = class 110 7 = class 125 6 = class 150
5 = class 200 3 = class 250 2 = class 300 1 = class 400 >1 = class 500

The general rule is the higher the class, the higher the rate for every hundred pounds you ship. Rates are structured so that as the weight of your shipment increases, the rate per hundred pounds decreases.

Total cost rates are based on several factors:
• The distance the load is moving
• The load’s weight
• The density of the commodity being shipped
• The commodity’s susceptibility to damage
• The value of the items being shipped
• The commodity’s load ability and handling characteristics

* The examples and information listed here are for educational purposes and are only estimates. BestFreightRate does not accept responsibility for an incorrect determination of freight class based on the information provided here.  Furthermore, freight classifications are subject to change at any time.  Therefore, it is recommended that you consult one of our freight experts to verify any NMFC item numbers you are using to see if they are current.

Find Your NMFC Class

If you’re unsure of your class, complete the following form, and BestFreightRate will help you by emailing you the NMFC article information and class for your review. Click here to preview this information.  However, the shipper is ultimately responsible for properly describing the shipment and meeting all packaging, or other requirements as noted in the NMFC.  Also, carriers have the right to inspect and reclassify items if there is a better description or classification.

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