Freight Density Formula:
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Definition: This calculator determines the freight density (in pounds per cubic foot) which is used to classify freight shipments for XPO Logistics.
Purpose: It helps shippers and logistics professionals calculate the density of their shipments to determine the appropriate freight class.
The calculator uses the formula:
Where:
Explanation: The formula converts cubic inches to cubic feet (1728 in³ = 1 ft³) and calculates how much weight occupies each cubic foot of space.
Details: Freight class is determined by density, value, stowability, handling, and liability. Density is often the primary factor, with higher density freight generally receiving lower (cheaper) classes.
Tips: Enter the shipment weight in pounds and all dimensions in inches. Measure the actual dimensions of the palletized freight, including any packaging.
Q1: How does density relate to freight class?
A: Generally, higher density shipments qualify for lower freight classes. For example, >50 lb/ft³ might be Class 50, while <1 lb/ft³ might be Class 500.
Q2: Why is 1728 used in the formula?
A: There are 1728 cubic inches in a cubic foot (12×12×12), which converts the volume from cubic inches to cubic feet.
Q3: Should I round dimensions before calculating?
A: No, use exact measurements. The calculator will handle the precise conversion.
Q4: How do I measure irregularly shaped items?
A: Use the maximum length, width, and height of the entire palletized shipment.
Q5: Does this calculator determine exact freight class?
A: It calculates density which is the primary factor, but final class may also consider other factors like value and handling requirements.