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CargoToolsHub reference

Freight Class Density Chart

A practical density-band reference for the current 13-sub density structure, with links to calculators and classification caveats.

Density-based freight-class planning uses pounds per cubic foot (pcf). CargoToolsHub uses the current 13-sub density scale in its planning calculators.

Density bands used by the calculator

Density (lb/ft³) Density-based class
<1 400
1–<2 300
2–<4 250
4–<6 175
6–<8 125
8–<10 100
10–<12 92.5
12–<15 85
15–<22.5 70
22.5–<30 65
30–<35 60
35–<50 55
50+ 50

Density is not a guaranteed official NMFC classification. Commodity-specific provisions, handling, stowability, liability and carrier tariffs can change the applicable class. Use the Freight Class Calculator for a density estimate and verify critical shipments with the applicable authoritative source.

Source & review

Reference provenance

Primary source
National Motor Freight Traffic Association (NMFTA)
Primary source link
Open source
Last reviewed
September 28, 2026

Operational standards, tariffs and equipment can change. CargoToolsHub maps each table or method to the cited review basis where possible and still recommends checking the exact carrier, operator or standard that applies to your shipment.