Disclaimer

The short version

• Results are estimates for planning, not official NMFC classifications, carrier quotes, or booking confirmations.
• The NMFC item, the carrier tariff, and the carrier’s actual measurements control the final rating and charge.
• FreightClassHub is independent and is not affiliated with the NMFTA, UPS, FedEx, USPS, or any carrier.
• We do not provide legal, tax, insurance, safety, or transportation-compliance advice.
• If a result matters to a shipment, confirm it with your carrier or the NMFTA before you rely on it.

Freight class and density

The freight class calculator divides total gross weight by total cubic feet and maps the result to the 2025 NMFC density scale, effective July 19, 2025. That scale has 13 density tiers, from Class 400 to Class 50.

Density is only one of four transportation characteristics. Handling, stowability, and liability also affect classification, and a commodity-specific NMFC item can override a density result. Classes 77.5, 110, 150, 200, and 500 are commodity-specific and are never returned by a density lookup.

Carriers can reweigh and re-dimension freight after pickup. A mixed shipment may be rated per handling unit or at the highest line class. The combined result is not a guarantee that the carrier will apply that class to every unit.

Linear feet and trailer planning

The linear feet calculator estimates trailer floor length by packing rectangular footprints into rows. It does not model overhang, irregular or non-rectangular loads, interlocking, load-bearing limits, axle weight, securement, or the sequence a crew actually loads. Trailer presets are planning values, not a guarantee of the equipment or usable dimensions you will receive.

An over-trailer flag means the estimated load exceeds the selected trailer length. It is a planning warning, not a determination that a load is legal, safe, or acceptable to a carrier. Carrier linear-foot and cubic-capacity rules vary by tariff and contract.

Parcel dimensional weight

The dimensional weight calculator rounds each measured side up to the next whole inch, applies the published divisor, and compares the result with actual weight. It is an estimate of billable weight, not a price. Carriers can reweigh and re-dimension parcels, apply additional-handling or nonstandard fees, use a negotiated divisor, or rate a service under different rules.

USPS dimensional weight applies only above 1,728 in³, is capped at 70 lb, and uses the 0.785 non-rectangular factor. Size and weight limits, flat-rate packaging, and carrier-owned packaging can change eligibility. A parcel outside a carrier’s limits is flagged and should not be treated as normally shippable.

Pallet weight and cube

Pallet tare varies with species, moisture, board thickness, repairs, and manufacturer. Use the actual tare for the pallet you are shipping. The calculator does not model stacking strength, racking capacity, overhang rules, packaging requirements, or carrier handling limits. Confirm the finished load before tendering it.

NMFC commodity lookup

The NMFC commodity lookup is an informational guide to the classification basis behind common LTL freight. It does not publish NMFC item numbers and does not reproduce the NMFC. The typical density and class span shown are context, not a substitute for the current item number, any density subprovision, or the carrier’s tariff.

Not professional advice

The site does not provide legal, tax, insurance, safety, or transportation-compliance advice. You are responsible for the accuracy of the dimensions and weights you enter, for packaging and labeling, and for loading, securement, weight limits, and any regulatory requirements that apply to your shipment.

No affiliation or endorsement

FreightClassHub is independent. It is not affiliated with, endorsed by, or sponsored by the National Motor Freight Traffic Association (NMFTA), UPS, FedEx, USPS, or any carrier, broker, or freight forwarder. Third-party names and trademarks are used for identification and reference only.

External links and sources

Pages link to the NMFTA, carriers, and other reference sites. We do not control those sites and are not responsible for their content, availability, or privacy practices. Rules and published references change; verify the current version with the source before relying on it.

No warranty and limitation of liability

The site and its content are provided “as is” and “as available,” without warranties of any kind, express or implied. To the maximum extent permitted by law, FreightClassHub and its contributors are not liable for any direct, indirect, incidental, consequential, special, or punitive damages arising from your use of the site, including reclass fees, rate differences, lost revenue, or business interruption. The full terms are in the terms & conditions.

Changes to this disclaimer

We may update this disclaimer when a calculator, source, or carrier rule changes. The effective date at the top of this page will change when the disclaimer is revised.

Questions

Questions about this disclaimer or a result: hello@freightclasshub.com. See also the terms & conditions, the privacy policy, and the methodology and sources.