8 - 10 pcf · NMFC density scale
The rating for freight at 8 - 10 pounds per cubic foot on the current 13-band NMFC density scale. Typically cabinets, wine cases, packaged tools.
Class 100 covers 8 - 10 pcf and marks the point where freight starts being priced more for its volume than its weight. Cabinets, wine cases and packaged tools are typical. Freight around 8 - 9 pcf comes out as class 110 on the obsolete guideline still hard-coded into several free calculators; on the current scale that density is class 100.
Worked example. A standard pallet: 48 × 40 × 48 in, 480 lb. That is 53.3 cu ft and 480 lb → 9.00 pcf → class 100. Run your own numbers →
Band edges are inclusive at the bottom, exclusive at the top: exactly 8 pcf is class 100, but just below it the class gets more expensive — 7.99 pcf rates class 125. A few pounds of packaging or an inch of pallet height can move a borderline shipment across that line.
Freight class runs from 50 (densest, cheapest per pound) to 400 on the current density scale. Class 100 is band 8 of 13.
Either side of this band: denser freight (10 - 12 pcf) rates class 92.5, which is cheaper; lighter freight (6 - 8 pcf) rates class 125, which costs more.
The full table is on the freight class chart, and the calculator works out density and class from your dimensions, including multi-pallet shipments.