LTL Trucking & Motor Freight Classification

LTL Freight Class & NMFC Density (PCF) Calculator

Find your exact NMFC freight class (Class 50 to 500) and PCF density in seconds. Prevent costly carrier re-weigh penalties. Free, instant & mobile-ready.

1. Overview & Logistics Industry Significance

Less-Than-Truckload (LTL) motor carriers in the United States and Canada price freight according to the National Motor Freight Classification (NMFC) system established by the National Motor Freight Traffic Association (NMFTA). The NMFC assigns every commodity a Freight Class between Class 50 (lowest rate) and Class 500 (highest rate). LTL freight classes are fundamentally determined by commodity density measured in Pounds per Cubic Foot (PCF). Dense, compact cargo that stacks easily is cheaper to transport and receives a low class (e.g. Class 50–70). Light, fragile, low-density cargo that monopolizes trailer cube space receives a high class (e.g. Class 250–500). Misclassifying cargo triggers carrier Weight and Inspection (W&I) adjustments, inspection fees, and back-charges.

2. How It Works & Calculation Rules

PCF Density Calculation Formula: 1. Calculate Total Cubic Feet (CFT) = (Length × Width × Height in inches) / 1,728. (Include pallet base dimensions!). 2. Calculate Density (PCF) = Total Weight (lbs) / Total Volume (CFT). Standard NMFC Density-to-Class Table: - 50+ PCF: Class 50 (Densely packed hardware, steel bolts, engine blocks) - 35 to 50 PCF: Class 55 - 30 to 35 PCF: Class 60 - 22.5 to 30 PCF: Class 65 - 15 to 22.5 PCF: Class 70 (Automotive parts, machinery) - 13.5 to 15 PCF: Class 77.5 - 12 to 13.5 PCF: Class 85 - 10.5 to 12 PCF: Class 92.5 - 9 to 10.5 PCF: Class 100 - 8 to 9 PCF: Class 110 - 7 to 8 PCF: Class 125 - 6 to 7 PCF: Class 150 - 5 to 6 PCF: Class 175 (Clothing, dry foods) - 4 to 5 PCF: Class 200 (Electronics, appliances) - 3 to 4 PCF: Class 250 - 2 to 3 PCF: Class 300 - 1 to 2 PCF: Class 400 - Less than 1 PCF: Class 500 (Ping pong balls, foam, unassembled lampshades)

3. Step-by-Step Instructions

  1. Enter the palletized dimensions: Length, Width, and Height in inches (measure from floor to top of freight).
  2. Input the total gross weight of the pallet in pounds (include pallet wood weight ~40 lbs).
  3. Click calculate to determine exact Pounds Per Cubic Foot (PCF) density.
  4. Match PCF density against the official NMFC class table and record the class on your Bill of Lading (BOL).

4. Practical Real-World Example

A palletized machine parts shipment measures 48 × 40 × 48 inches and weighs 900 lbs. Volume = (48 × 40 × 48) / 1,728 = 53.33 CFT. Density = 900 lbs / 53.33 CFT = 16.87 PCF. According to standard NMFC guidelines, a density of 16.87 PCF qualifies as Class 70, securing competitive LTL transport rates.

Frequently Asked Questions (FAQ)

What is PCF in freight shipping?

PCF stands for Pounds per Cubic Foot. It is the primary metric used to determine LTL freight classification by dividing total pallet weight in pounds by total pallet volume in cubic feet.

Why do carriers re-weigh and re-class LTL shipments?

LTL carriers employ certified Weight and Inspection (W&I) inspectors at cross-dock hubs. If a shipper declares Class 70 on the BOL but dimensions reveal the density is actually Class 150, the carrier adjusts the freight rate and adds an inspection fee (often $75 to $150).

What four factors determine NMFC freight class?

The four NMFC pillars are: 1. Density (weight per cubic foot), 2. Stowability (stackability and hazardous materials status), 3. Handling (ease of forklift/pallet jack transport), and 4. Liability (value, perishability, and susceptibility to theft or damage).