Freight class calculator for the 2025 density scale
Enter your pallet size and weight. Get the density and the freight class on the 2025 scale. Then type what the carrier billed to see if the bill looks too high.
An estimate on the NMFC density scale in force since July 19, 2025. Some items have a fixed class, not a density class. Check your item's NMFC number before you ship.
Got a reclass or reweigh charge? Send us the bill. You get a findings report within 48 hours, free.
Get Your Free Fee AuditThe density scale
Since July 19, 2025, most LTL freight is classed by density: pounds per cubic foot. Heavier for its size means a lower class and a lower rate. This is the standard 13-step scale the calculator uses.
| Step | Density (lb per cubic foot) | Class |
|---|
How to measure
- Measure length, width and height of each handling unit at its widest points, pallet and overhang included.
- Weigh each unit on a scale, pallet included.
- Cubic feet = length × width × height in inches ÷ 1,728.
- Density = total weight ÷ total cubic feet. Find the class on the scale.
Why your bill can show a higher class
Carriers measure freight at their terminals. If their numbers differ from yours, they can reweigh or reclass the shipment and add a charge.
Sometimes they are right. Sometimes the measurement is off, the pallet was measured wrong, or the item has a fixed class. A reweigh or reclass charge should come with proof, such as an inspection certificate.
What to do if the bill looks wrong
Keep your bill of lading, your own measurements and photos of the pallets.
Ask the carrier for the inspection certificate behind the charge.
File the dispute in writing. Or send the bill to us and we check it for you.
Questions
How is freight class calculated in 2025?
Since July 19, 2025, most LTL freight uses a 13-step density scale. Divide the weight by the cubic feet. The result in pounds per cubic foot sets the class, from 400 (under 1 lb per cubic foot) down to 50 (50 lb or more).
Do I include the pallet?
Yes. Measure and weigh each handling unit as it ships, pallet and any overhang included.
Does every item use the density scale?
No. Some items keep a fixed class in the NMFC because of how they handle or stack. Check your item's NMFC number.
What is a reclass fee?
A charge the carrier adds when it decides your freight belongs in a higher class than the bill of lading says. It often follows a carrier inspection.
Is this calculator official?
No. It is a free estimate tool. We are not linked to the NMFTA, which publishes the NMFC.
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