1. What is a Central Transport Class Calculator?

Definition: This calculator determines the density of a shipment for freight classification purposes with Central Transport.

Purpose: It helps shippers and logistics professionals calculate the density of their freight to determine the appropriate NMFC freight class.

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 formula converts cubic inches to cubic feet (1728 cubic inches = 1 cubic foot) and calculates how much weight occupies each cubic foot of space.

3. Importance of Freight Density Calculation

Details: Freight class is largely determined by density. Higher density items typically receive lower (cheaper) freight classes, while lower density items receive higher (more expensive) classes.

4. Using the Calculator

Tips: Enter the weight in pounds and all dimensions in inches. Measure the actual dimensions of your shipment, including packaging. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 1728 used in the formula?
A: 1728 is the number of cubic inches in a cubic foot (12 inches × 12 inches × 12 inches = 1728 cubic inches).

Q2: How does density affect freight class?
A: Generally, higher density means lower freight class (e.g., 50+ lb/ft³ = Class 50, 12-15 lb/ft³ = Class 150).

Q3: Should I measure pallet dimensions or just the product?
A: Always include the pallet and all packaging in your measurements - carriers charge based on the space your shipment occupies.

Q4: What's the most common freight class?
A: Class 70-85 is common for machinery and manufactured goods, while Class 125-175 is typical for furniture and low-density items.

Q5: Does this calculator determine exact freight class?
A: While density is the primary factor, other characteristics (value, stowability, handling) may affect the final classification.