1. What is a Freight Class Calculator?

Definition: This calculator determines the freight class based on the density of your shipment according to NMFC (National Motor Freight Classification) standards.

Purpose: It helps shippers estimate the appropriate freight class for LTL (Less Than Truckload) shipments, which affects shipping costs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density (pounds per cubic foot)
• \( W \) — Weight (pounds)
• \( L \) — Length (inches)
• \( W \) — Width (inches)
• \( H \) — Height (inches)

Explanation: The calculator converts cubic inches to cubic feet (1728 in³ = 1 ft³), then divides weight by volume to get density, which determines the freight class.

3. Importance of Freight Class Calculation

Details: Correct freight class ensures accurate shipping quotes and prevents reclassification fees. Lower classes (50-85) generally cost less than higher classes (100-500).

4. Using the Calculator

Tips: Enter the shipment's weight in pounds and dimensions in inches. The calculator will determine density and suggest the appropriate NMFC freight class.

5. Frequently Asked Questions (FAQ)

Q1: What is NMFC freight class?
A: The National Motor Freight Classification system categorizes goods into 18 classes (50-500) based on density, stowability, handling, and liability.

Q2: Why does freight class matter?
A: Carriers use freight class to determine pricing. Lower classes (higher density) typically cost less to ship than higher classes.

Q3: Are there exceptions to density-based classification?
A: Yes, some commodities have specific classes regardless of density (e.g., gold would be class 500 due to high value).

Q4: How accurate is this calculator?
A: It provides a general estimate based on density. Final classification may consider additional factors like commodity type.

Q5: What if my shipment has multiple items?
A: Calculate the total weight and sum of all items' dimensions (or use the pallet dimensions if stacked).