Freight Density and NMFC Class
Density (lb/ft^3) and NMFTA density-class bracket from handling unit.
Example
You enter
- Length (in) 48
- Width (in) 40
- Height (in) 48
- Weight (lb) 350
You get
- Cube 53.33 ft^3
- Density 6.56 lb/ft^3
Checked against published worked examples from: NMFTA.
Details, formula, and sources
Formula or tableDensity = weight (lb) / volume (ft³). NMFTA NMFC bracket assignment from density (lb/ft³) into Class 50 (>= 50 pcf) through Class 500 (< 1 pcf).
Source and editionNMFTA NMFC density-class brackets by name. Cited by name only; NMFC item descriptions and commodity codes not reproduced.
Free accessNMFC publication licensed; class-density bracket cutoffs free in published carrier rate guides.
What governsMath aid for personal verification. The ELD on the truck and the carrier tariff are the legal record. State limits may be lower than federal.
API field nameslength_in, width_in, height_in, weight_lb, cubic_ft, density_pcf
- Bracket cutoffs NMFTA-published density-class tableNMFTA NMFC