The calculation, without hidden assumptions
Turn the dimensions and gross weight of the handling unit as tendered into shipment cube, lb/ft³ and kg/m³. MAXScanner then shows the matching class on the current 13-band NMFC full-density scale while keeping the crucial distinction between a density-band estimate and the actual classification of a commodity.
How to use this calculator
Measure the greatest outside packaged length, width and height of one identical handling unit, including pallet, packaging and projections as tendered.
Enter gross weight per handling unit, including the pallet/packaging, and the number of identical units.
Read the aggregate shipment cube and density in both lb/ft³ and kg/m³.
Use the displayed class only as a full-density planning estimate; confirm the applicable NMFC item and carrier tariff before rating or preparing shipping documents.
Where people use it
- •Sanity-check LTL density before requesting or auditing a freight quote.
- •Convert warehouse measurements in cm/kg into the lb/ft³ commonly used in US LTL density bands.
- •See how packaging dimensions affect shipment density before changing a carton or pallet configuration.
- •Check the exact density band around a class boundary without confusing physical density with a guaranteed freight class.
48 × 40 × 45 in handling unit at 450 lb
The packaged cube is 48 × 40 × 45 ÷ 1,728 = 50 ft³. At 450 lb, density is 9.00 lb/ft³, which falls in the 8 to under 10 lb/ft³ full-density band (Class 100). NMFTA uses this same 450 lb / 50 ft³ example for density arithmetic.
What the result does not assume
- •The displayed class is a density-band estimate, not an NMFC item lookup or a guaranteed bill-of-lading class. NMFC classification also considers handling, stowability and liability, and commodity-specific provisions can override the full-density scale.
- •Measure the handling unit as tendered, including pallet, packaging and projections. Under-measuring the outside envelope can materially overstate density.
- •Carrier tariffs, contracts and classification provisions can differ. Confirm the current applicable NMFC item and carrier requirements for a shipment that affects billing or compliance.
- •This owner assumes identical handling units. For mixed pallets or cartons, calculate total packaged cube and total gross weight across all units before relying on aggregate density.
Frequently asked questions
How do I calculate freight density?+
Calculate the outside packaged cubic volume, multiply by quantity, then divide total gross weight by total cube. In US LTL work the common result is pounds per cubic foot (lb/ft³).
Do I include the pallet in freight dimensions and weight?+
Yes when the pallet is part of the handling unit as tendered. Use the greatest outside packaged dimensions and gross handling-unit weight rather than product-only dimensions.
Does density automatically determine freight class?+
Not always. The current NMFC uses a 13-band full-density scale for applicable commodities, but handling, stowability, liability and commodity-specific provisions can require different treatment.
What changed in the NMFC density scale in 2025?+
The full-density structure expanded from 11 to 13 subprovisions. The current upper bands include 30 to under 35 lb/ft³ at Class 60, 35 to under 50 at Class 55, and 50 or greater at Class 50.
Why does a small dimension change matter?+
Density divides weight by cubic volume. A larger measured outside envelope increases cube and lowers density, which can move a shipment across a density-band boundary.
Can I use kg and cm?+
Yes. The calculator normalizes mm, cm, m, inches or feet and kg or lb, then returns both kg/m³ and lb/ft³.
Semantic next steps
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MAXScanner keeps the formula and assumptions beside the result so you can verify the number before using it in a drawing, estimate, specification, worksheet or document. Where a supplier, manufacturer, drawing or applicable standard owns a requirement, that source remains authoritative.