Enter your shipment's weight and dimensions to calculate your NMFC freight class and density. Add multiple pieces for a mixed shipment. Results are instant — no account needed.
| Class | Density (lbs/cu ft) | Typical Freight |
|---|
⚠️ Estimate only. Density-based classification is a general guide. Your specific commodity may have a designated NMFC item number that overrides density-based class. Always verify your exact class at nmfta.org or consult your freight broker before booking to avoid reclassification charges.
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Freight class is based primarily on density — the weight of your shipment divided by its cubic footage. Denser, heavier freight earns a lower (cheaper) class. Lighter, bulkier freight gets a higher (more expensive) class.
Formula: Density = Total Weight (lbs) ÷ [L × W × H (inches) ÷ 1,728]
Always measure to the outermost point of your shipment including pallet, shrink wrap, and packaging. Carriers re-measure at the terminal — inaccurate dimensions lead to reclassification charges. Read our full Freight Class Guide →