Calculate freight class instantly using NMFC density-based classification. Enter your shipment details below.
| Class | Density Range (PCF) | Base Rate/CWT |
|---|
Freight class is a standardized classification system (NMFC) that categorizes commodities for LTL shipping. There are 18 classes ranging from Class 50 (heaviest/densest) to Class 500 (lightest). Class determines your shipping rate.
Freight class is primarily determined by density (weight per cubic foot). Density = Weight / (L x W x H / 1728). Higher density = lower class = lower cost. Other factors include stowability, handling, and liability.
Yes. Repackaging to reduce dimensions increases density, which can lower your class. Even reducing box height by 1-2 inches can drop your class and save 10-20% on freight costs.