Freight Class Calculator

The Freight Class Calculator is an essential tool used in the logistics and shipping industry to determine the classification of various types of freight. This classification impacts the cost of shipping goods by evaluating factors such as the density, stowability, handling, and liability associated with the freight. Accurate freight classification is crucial for logistics planning, ensuring that both shippers and carriers can negotiate fair shipping rates based on standardized criteria.

Formula of Freight Class Calculator

The calculation of freight class largely depends on the density of the shipment, which reflects how much space an item occupies in relation to its weight. Here's how to calculate the density, which is the primary determinant of freight class:

1. Calculate the Volume:
   • Formula: Volume = Length * Width * Height
   • Note: Measure all dimensions in inches for precision.
2. Convert Volume to Cubic Feet (if necessary):
   • Formula: Volume in cubic feet = (Length * Width * Height) / 1728
3. Calculate the Density:
   • Formula: Density = Weight / Volume
   • Units: Weight in pounds, Volume in cubic feet

To determine the freight class, consult the freight class chart by the National Motor Freight Traffic Association (NMFTA), which categorizes items based on density and other factors.

• Density Calculation Example:
  • Volume (in cubic feet) = (Length * Width * Height) / 1728
  • Density (in pounds per cubic foot) = Weight / Volume

Table for General Terms

To aid users in understanding common terms related to freight shipping, here is a helpful table:

Term	Description	Example
Density	Weight per cubic foot of the item shipped.	30 lbs/cubic ft.
Freight Class	Category of freight as defined by NMFTA.	Class 100, Class 50
Stowability	How easily the item can be stored on a truck.	Non-stackable drums
Handling	Special handling needs of the freight.	Fragile, hazardous
Liability	Potential for theft, damage, or spoilage.	High-value electronics

Example of Freight Class Calculator

For a practical application, imagine you need to ship a pallet of books weighing 500 pounds, measuring 40 inches long, 48 inches wide, and 45 inches high:

• Calculate Volume in Cubic Feet:
  • Volume = (40 * 48 * 45) / 1728 = 50 cubic feet
• Calculate Density:
  • Density = 500 lbs / 50 cubic ft = 10 lbs/cubic ft
• Determine Freight Class:
  • According to NMFTA guidelines, a density of 10 lbs/cubic ft may fall into a higher freight class, affecting the shipping cost.

Most Common FAQs