Freight Class Calculator

Q: What is freight class?

The NMFC system (classes 50–500) standardizes LTL pricing. Lower class = denser, cheaper-to-ship freight. Class is set by density plus handling, stowability and liability characteristics.

Q: Why does the right class matter?

Carriers reweigh and reclassify freight; a wrong class on the BOL triggers adjustment fees. When in doubt, look up the commodity's NMFC listing or ask your carrier.

Q: What if my shipment is over 12 linear feet?

Volume rules may apply instead — check the linear feet calculator. Planning the pallet itself? Use the pallet calculator.

Shipment details

Handling units

Length (in)

Width (in)

Height (in)

Total weight (lb)

Density

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Cubic feet

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Estimated class

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Measure the handling unit as it ships — palletized freight includes the pallet's dimensions and weight. Density-based estimate; the NMFC commodity listing (handling, stowability, liability) can override it.

Density to class chart

Freight class	Density range
Class 50	≥ 50 lb/ft³
Class 55	35 – 50 lb/ft³
Class 60	30 – 35 lb/ft³
Class 65	22.5 – 30 lb/ft³
Class 70	15 – 22.5 lb/ft³
Class 77.5	13.5 – 15 lb/ft³
Class 85	12 – 13.5 lb/ft³
Class 92.5	10.5 – 12 lb/ft³
Class 100	9 – 10.5 lb/ft³
Class 110	8 – 9 lb/ft³
Class 125	7 – 8 lb/ft³
Class 150	6 – 7 lb/ft³
Class 175	5 – 6 lb/ft³
Class 200	4 – 5 lb/ft³
Class 250	3 – 4 lb/ft³
Class 300	2 – 3 lb/ft³
Class 400	1 – 2 lb/ft³
Class 500	< 1 lb/ft³

Since the NMFTA's 2025 reclassification, most commodities without special handling characteristics are classed purely by this density scale. Scale last verified July 2026.

Freight class basics

What is freight class?