Guides
How to Calculate Freight Class (Step by Step, 2025 Rules)
Measure, find cubic feet, calculate density and read the 13-tier NMFC density scale, with a worked pallet example.
The 2025 NMFC Changes Explained: The 13-Tier Density Scale
What NMFC Docket 2025-1 changed on July 19, 2025, who it affects and what shippers should do.
USPS Changed Its DIM Divisor to 139: What It Costs You
USPS moved from 166 to 139 on July 12, 2026. See how much more oversized boxes cost and how to avoid it.
How to Avoid Freight Reclassification Fees
Why LTL carriers reclassify shipments, what it costs, and a checklist to stop it happening.
Freight Class vs. DIM Weight: Which One Applies to You?
LTL freight is priced by class; parcels by billable weight. How to tell which system you're in and why it matters.
5 Ways to Lower Your Freight Class (and Your LTL Bill)
Practical ways to raise density and drop a freight class tier: restacking, consolidating and packaging.