Freight Class Calculator (2026 NMFC)

Calculate your NMFC freight class, density, and billable weight instantly — using the updated 13-class density scale effective July 19, 2025.

Last updated: April 24, 2026
Updated May 13, 2026
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Freight Class & Density Calculator

Enter your pallet or handling-unit dimensions and weight. We calculate density, suggest an NMFC density-based class, and compute billable weight for parcel and LTL carriers.

Dimensions (per unit)

Standard 48×40 pallet is 48 in. long, 40 in. wide. Include the pallet itself in your height measurement (typically +5.5 in.).

Weight & Quantity

If every pallet is identical, use 1. Otherwise calculate each pallet separately and sum densities carefully.

Suggested Freight Class
65(density tier: 22.5 to under 30 lb/ft³)
Calculated Density
22.50 lb/ft³

Important: This is the NMFC density-based class. Commodity-specific NMFC items may override this — for example, hazmat, perishables, high-value goods, or items with handling requirements often carry a class higher than density alone would suggest. Always verify with your carrier or NMFTA ClassIT before booking.

Total Cubic Feet
53.33
92,160 cubic inches total
Total Weight
1,200.0 lb
544.3 kg
Billable Weight (Parcel)
1,200.0 lb
Dim weight (÷139): 663.0 lb
LTL Billable Weight (DIM 194)
1,200.0 lb
LTL carriers apply a higher DIM factor (typically 194 for domestic LTL). Low-density freight is almost always charged on dim weight — a major reason densifying your packaging can cut shipping cost by 20–40%.
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2026 NMFC Update — Why This Calculator Was Rebuilt

The National Motor Freight Classification (NMFC) went through its most significant restructuring in decades on July 19, 2025. The density scale expanded from 11 classes to a 13-class scale. Classes 50 and 55 were added at the high-density end, and roughly 2,000 commodities were shifted from commodity-based to density-based classification.

For dense shippers (building materials, machinery, metal parts, bottled beverages, auto parts), this was good news — more items now classify purely on density, and the two new low classes mean cheaper LTL rates for very dense freight. Many shippers who were previously paying class 60 or 65 are now qualifying for class 55 or 50.

Most legacy freight class calculators on the web still use the old 11-class scale. This calculator uses the current 13-class density scale and reflects the post-July 2025 rules.

2026 NMFC Density Scale — Full Class Chart

This is the full 13-class density-to-class mapping under the current NMFC standard. Density is calculated as total weight in pounds divided by total cubic feet of the handling unit.

Density (lb/ft³)Freight ClassTypical Examples
Less than 1 lb/ft³400Foam, packing peanuts, empty display cases
1 to <2 lb/ft³300Lightweight plastics, inflatable goods
2 to <4 lb/ft³250Mattresses, oversized display furniture
4 to <6 lb/ft³175Assembled furniture, plastic containers
6 to <8 lb/ft³125Small appliances, framed pictures
8 to <10 lb/ft³100Sheet metal, car covers, ceramic tile
10 to <12 lb/ft³92.5Plastic toys, retail fixtures
12 to <15 lb/ft³85Auto parts, crated machinery
15 to <22.5 lb/ft³70Food items, beverages, construction tools
22.5 to <30 lb/ft³65Canned goods, machinery parts
30 to <35 lb/ft³60Car batteries, bottled beverages
35 to <50 lb/ft³55Tiles, bricks, cement pallets
50 lb/ft³ or greater50Steel bars, dense metal, aggregate

Source: NMFTA NMFC 2025 restructuring (effective July 19, 2025). Applies to density-based NMFC items only. Commodity-specific items (hazmat, high-value goods, perishables) may classify differently regardless of density.

How Freight Class Affects Your LTL Rate

LTL carriers price shipments using a rate per hundredweight (CWT) that varies by freight class. Moving from class 125 to class 85 on the same lane typically drops the rate per CWT by 20–35%. Moving from class 250 to class 100 can cut your rate in half.

A concrete example: a 1,000-lb pallet of auto parts on a 400-mile lane might cost:

  • Class 250 (low density): $520
  • Class 125 (moderate density): $340
  • Class 85 (typical auto parts density): $240
  • Class 60 (dense machinery): $180

Same weight, same lane — three different prices depending on how densely you packed your pallet and how the NMFC item is classified. Getting the class right (and densifying where you can) is the single highest-leverage cost lever in LTL shipping.

Reducing Your Freight Class — Practical Tactics

  1. Measure correctly. Use the outermost dimensions of the pallet including overhang, shrink wrap, and the pallet itself. Do not measure individual boxes. A 48×40 pallet with product stacked to 5 ft tall is 67.2 cubic feet.
  2. Densify your packaging. Remove void fill, tighten stacks, use taller pallets where safe, consolidate partial layers. Gaining 2–3 lb/ft³ typically moves you up one class tier.
  3. Consolidate pallets. If you ship two half-height pallets, consolidating them to one full pallet doubles density. Density is per handling unit, not per shipment.
  4. Verify commodity-based items. Roughly 1,500 NMFC items remain commodity-based. Look them up in NMFTA ClassIT or your carrier portal — your class might already be assigned regardless of density.
  5. Use a 3PL for LTL volume. Contracted 3PL or broker rates typically beat individual shipper tariffs by 20–35%. And a good 3PL audits classifications for you.
  6. Accurate BOL descriptions. The bill of lading must describe the freight accurately. Carriers that reweigh and reclass bill the correction at a premium — an inaccurate BOL costs more than honest classification.

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