Freight class is a crucial metric in the shipping industry that determines how carriers categorize and charge for shipments. Knowing how to calculate freight class can help businesses minimize shipping costs and optimize their supply chain operations. In this article, we will explore what freight class is, its importance, and how to accurately calculate it for your shipments.

What is Freight Class?

Freight class refers to the National Motor Freight Classification (NMFC) system used by shipping carriers to classify commodities into 18 different classes ranging from 50 to 500. These classes are determined based on factors like density, stowability, handling, and liability. A shipment’s freight class plays a significant role in determining shipping rates, as higher-class shipments typically have higher rates.

Why is Freight Class Important?

Understanding and correctly calculating freight class helps businesses:

1. Obtain accurate shipping quotes: Proper freight class determination prevents unexpected charges due to misclassification.

2. Facilitate carrier communication: Carriers use the NMFC system for efficient communication about shipment types.

3. Make informed decisions: Accurate freight classes help businesses choose shipment options that minimize costs and ensure safe transport.

Steps to Calculate Freight Class

Step 1: Measure your shipment

To determine your shipment’s dimensions, measure its height, width, and depth in inches.

Step 2: Calculate shipment volume

Multiply the height by the width by the depth to find the volume of your shipment in cubic inches.

Step 3: Determine shipment weight

Weigh your shipment in pounds using an accurate scale.

Step 4: Calculate density

Divide the weight of your shipment (in pounds) by its volume (in cubic inches) to find its density. Then multiply the result by 1728 (the number of cubic inches in a cubic foot) to get the density in pounds per cubic foot (PCF).

Step 5: Refer to the NMFC classification chart

With your shipment’s density calculated, refer to the NMFC chart to find the corresponding freight class. The chart categorizes freight classes based on density ranges. Find the range that includes your shipment’s density, and note its corresponding freight class.

Conclusion

Knowing how to calculate freight class is vital for businesses to minimize shipping costs and improve supply chain operations. By understanding factors involved in determining shipment classes, you can ensure accurate classification and avoid costly errors. Remember to measure your shipment accurately, calculate density, and refer to the NMFC chart for correct freight class determination.