Freight Class Calculator
Calculate LTL freight density and class using the NMFC 13-subprovision density scale in effect since July 19, 2025. Inches/lb or cm/kg.
How it works
Density = total weight (lb) ÷ total cubic feet, where ft³ = L × W × H (in) ÷ 1,728. Classes from the NMFC standard 13-subprovision density scale: <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. Some commodities have their own NMFC item and class, so confirm with your carrier.
Examples
- 48 × 40 × 48 in pallet at 500 lb: 53.33 ft³, 9.38 lb/ft³ → class 100.
FAQ
Did freight classes change in 2025?
Yes. NMFTA Docket 2025-1 (effective July 19, 2025) adopted the 13-tier density scale.