Freight Class Calculator
Enter your pallet dimensions and gross weight to calculate LTL freight class from density, with the full step-by-step math shown for the bill of lading.
How to calculate freight class in three steps
- Measure extreme dimensions. Measure the length, width and height at the outermost points of the packaged freight, exactly as NMFC Item 110 requires: skids, overhang, straps and dunnage all count.
- Compute cubic feet and density. Multiply the three dimensions, divide by 1,728 to get cubic feet, then divide the gross weight by that figure to get PCF.
- Match the CCSB ladder. Read your PCF against the 18-tier density ladder to find the class the carrier will price, from Class 50 for dense freight down to Class 500 for the lightest loads.
There is more than one way to use this online freight class calculator. Dispatch desks keep it open as a daily ltl freight class calculator, spot-quote shoppers treat it as a quick class freight calculator, and anyone determining freight class—calculator in hand, not memory—gets the answer in under a minute: figure freight class before tendering and you quote the same tier the terminal will confirm, which is exactly what protects you from invoice adjustments. The ladder you match here is the same one every general freight calculator prices against.
Two traps that change the class after pickup
The pallet overhang trap. Freight that hangs even two inches past the pallet edge is measured at the overhanging extremes by carrier laser scanners such as CubiScan. The volume jumps, the PCF drops, and the class can climb two tiers with a matching invoice adjustment.
The missing tare weight trap. A standard wood pallet adds roughly 35 to 50 pounds. Shippers who quote the cargo weight only get caught when the carrier scale reads higher, which invites both a reweigh fee and a reclassification fee.
Both traps are preventable with the checklist in our guide on how to avoid freight reclassification.
One pallet or a mixed load?
Shipping several pallets of different sizes in one shipment? Carriers price the shipment on combined density, not on the heaviest piece. The freight density calculator for multiple pallets totals volume and weight across handling units before matching the ladder, and the NMFC bumping rule calculator shows when declaring extra weight on the BOL locks a cheaper class.
Express dimensional weight vs LTL freight class
Parcel and LTL carriers both charge for space, but the mathematics differ. Ground parcel services such as FedEx Ground and UPS apply dimensional weight with a divisor of 139 and bill the greater of actual and dimensional weight. LTL carriers instead classify the freight on the 18-tier density ladder. The same crate can be cheap to parcel and expensive to palletize, so run both models before choosing a mode.
| Aspect | Express dimensional weight | LTL freight class |
|---|---|---|
| Core formula | L x W x H (inches) / 139, compared against actual weight | Weight (lbs) / cubic feet = PCF, matched on the 18-tier ladder |
| What sets the price | The heavier of actual vs dimensional weight, per package | The density tier plus handling, stowability and liability |
| Measurement basis | Box outer dimensions at the longest points | Extreme dimensions of the palletized handling unit (NMFC Item 110) |
| Adjustment risk | Billing correction if the dim weight is underdeclared | Rewech and reclassification fees after terminal inspection |
| Best suited for | Small, dense, multi-piece shipments | Palletized freight from about 150 lbs up to full truckload lots |
Frequently asked questions
How to calculate freight class?
Measure the pallet or crate at its extreme outer dimensions, compute cubic feet by multiplying length, width and height and dividing by 1,728, divide the gross weight in pounds by that figure to get the density in PCF, then match the PCF against the 18-tier CCSB ladder. The calculator above performs all three steps and shows the working.
What is class 70 for freight?
Class 70 is the benchmark tier of the density ladder, covering freight between 15 and 22.5 pounds per cubic foot such as car accessories, packaged food and auto engines. It prices well because the freight is dense and easy to stack, and most well-built palletized loads aim for it.
What does PCF mean in freight?
PCF stands for pounds per cubic foot, the density figure LTL carriers use to assign a freight class. A 1,000-pound shipment occupying 53.33 cubic feet is 18.75 PCF, which lands in Class 70.
Does pallet weight count in freight density?
Yes. Density is computed from the gross weight of the handling unit, wooden pallet included: a standard GMA pallet adds roughly 40 pounds. Omitting the tare weight is one of the most common causes of reweigh fees.