NMFC Freight Class Estimator
Estimate the density-based LTL freight class for a shipment using its weight and occupied volume. The estimator follows the modern 13-band density scale, but it does not claim to determine the official NMFC classification for every commodity because actual classification may depend on the NMFC item, handling, stowability, liability and carrier rules.
The estimate uses the NMFTA 13-subprovision density scale ranging from Class 400 below 1 lb/ft³ to Class 50 at 50 lb/ft³ or greater.
NMFTA density scaleHow to use the NMFC Freight Class Estimator
- Enter dimensions, number of pieces and total shipment weight.
- The calculator determines cubic feet and pounds per cubic foot.
- The resulting density is compared with the 13-band density scale.
- Lower-density freight generally maps to higher class numbers while denser freight maps to lower classes.
- The displayed result is explicitly labeled as a density-scale estimate.
- Official classification should be confirmed when quoting or tendering a shipment.
Examples
High-density freight
A shipment at 50 pounds per cubic foot or greater maps to the density-scale estimate of Class 50.
Moderate-density freight
A shipment between 30 and below 35 pounds per cubic foot maps to the density-scale estimate of Class 60.
Frequently asked questions
What is NMFC freight class?
NMFC classification is a standardized freight-classification system used in LTL transportation.
Does density always determine freight class?
No. Density is important for many commodities, but other classification provisions can apply.
What density corresponds to Class 50 on the density scale?
The current 13-band density scale places freight at 50 pounds per cubic foot or greater in the Class 50 band.
Can a carrier reclass my shipment?
A carrier may apply the appropriate classification or tariff when the submitted class or commodity information is incorrect.
Why is this called an estimator?
Because shipment density alone cannot establish the official NMFC item or all classification factors for every commodity.
Where should I verify official classification?
Use current NMFTA classification resources and confirm with the carrier when classification affects the shipment rate.
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