With the upcoming National Motor Freight Classification (NMFC) LTL classification changes placing even more emphasis on freight density, understanding how to properly measure and calculate your shipments has never been more important. Whether you're a logistics veteran or just getting started, knowing how density impacts your freight class can save you from unexpected costs and ensure smoother shipping operations.
In a recent episode of Beyond Point to Point, Greg Hallmark, Averitt's Weigh and Research Area Leader, walked us through the step-by-step process of measuring freight and determining its density. Let’s break it down—and show you how Averitt makes it even easier with our Density Calculator.
Watch the video below to learn how to determine your freight's density.
Why Freight Density Matters More Than Ever
The NMFC system is evolving, and density-based classifications are becoming the standard. Instead of relying solely on product type, your shipment's size and weight now play a critical role in determining freight class—and ultimately, your shipping costs.
Misclassify your freight, and you could face reclassification fees, delays, or higher rates. That’s why it’s crucial to get it right from the start.
How to Measure Your Freight for Density
As Greg explains in the video, calculating density isn’t complicated when you know what to look for:
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Inspect Your Freight:
Before measuring, walk around your pallet or package to check for visible damage. -
Measure Longest Points:
Always measure from the longest point to the longest point—including overhangs, oversized pallets, or even items like "Do Not Stack" cones. -
Record Dimensions:
For example, if your pallet measures 44” (L) x 36” (W) x 48” (H), write those numbers down. -
Do the Math:
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Multiply Length x Width x Height.
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Divide by 1,728 (the number of cubic inches in a cubic foot).
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Then, take the weight of your shipment and divide it by the cubic feet to get your density (lbs per cubic foot).
Example:
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44 x 36 x 48 = 76,032 cubic inches
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76,032 ÷ 1,728 = 44 cubic feet
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If the weight is 600 lbs, then:
600 ÷ 44 = 13.64 lbs per cubic foot
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Determine Freight Class:
Using the NMFC density guidelines, a shipment with a density of 13.64 PCF would typically fall under Class 85.
Make It Easy with Averitt’s Density Calculator
Not a fan of manual math? No problem.
Averitt’s Density Calculator takes the guesswork out of the process. Just input your shipment details—pieces, dimensions, and weight—and get instant calculations for both density and estimated freight class.
In Greg’s walkthrough, plugging in the same shipment details gave us a quick result:
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44 cubic feet
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13.64 lbs per cubic foot
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Estimated Freight Class: 85
Stay Ahead of NMFC Changes
As density-driven classifications become the norm, tools like Averitt’s Density Calculator—and knowing how to measure properly—will help you avoid costly mistakes.
Need help navigating these changes? Visit our NMFC Resource Page for the latest updates, guides, and tools to keep your shipments compliant and cost-effective.
