Freight Class Calculator
Calculate NMFC freight class based on shipment density for accurate shipping quotes
Calculate Freight Class
Enter rate to calculate total shipping cost
Freight Classification Results
Example Calculation
Shipping Boxes Example
Dimensions: 3 ft × 4 ft × 5 ft pallet
Weight: 260 lbs
Volume: 3 × 4 × 5 = 60 cu ft
Density: 260 ÷ 60 = 4.33 lb/cu ft
Result
Freight Class: 200
Category: Light bulky items (4-5 lb/cu ft)
Rate Impact: Higher class numbers typically have lower rates per pound
Freight Class Quick Reference
NMFC Classification Benefits
Standardized shipping rates across carriers
Predictable freight costs for budgeting
Fair pricing based on cargo characteristics
Industry-wide accepted standard
Factors Affecting Classification
Density
Weight per cubic foot is the primary factor
Stowability
How well items fit together on a truck
Handling
Ease of loading, unloading, and transport
Liability
Risk of damage or theft during transit
Understanding Freight Classification
What is NMFC?
The National Motor Freight Classification (NMFC) is a standard that provides a comparison of commodities moving in interstate commerce. It groups commodities into one of 18 classes based on four characteristics: density, stowability, handling, and liability.
How Density Affects Rates
- •Higher density = Lower class number = Lower rates per pound
- •Lower density = Higher class number = Higher rates per pound
- •Carriers charge more for bulky, low-density items
- •Dense items take less truck space, allowing more freight
Classification Factors
Density
Weight per cubic foot (lb/cu ft). The primary determining factor for most commodities.
Stowability
How items fit together in transport. Irregular shapes may get higher classifications.
Handling
Special handling requirements increase classification and costs.
Liability
High-value or fragile items may require higher classification for liability coverage.