How to calculate freight class
The three-step density calculation you can do with a tape measure and a scale, the current 13-subprovision scale, and where the NMFC item number changes the answer.
Read the guide →Home/Resources
Free tools and referencesThe answers we get asked for most.
Everything here is free and none of it requires an account. The calculator never asks for an email. Where we do ask, it is because a person on our team has to do the work and send it back to you.
All 18 freight class codes
What each class means on the current density scale, what lands in it, and the five classes that do not come from density at all — whatever the charts elsewhere say.
See every class →Freight class calculator
Enter your pallet dimensions and weight and see where the shipment lands on the current 13-subprovision density scale. Runs in your browser, gives an answer instantly, and asks nothing of you.
Open the calculator →The 13-sub density chart
Every subprovision and class break on the current scale, laid out on one page you can print and keep at the desk. Includes the two new subprovisions that did not exist on the old scale.
Get the chart →NMFC item number check
Docket 2025-1 consolidated roughly 2,000 listings. Send us up to 10 of the item numbers you ship on and we will tell you which ones moved.
Request a check →Freight address verification
Most surprise charges come from the location, not the freight — no dock, limited access, residential. What gets checked before a shipment is priced, and why you often cannot tell by looking.
How it works →Accessorial fee checklist
The pickup and delivery conditions that trigger fees, in the order they usually show up on an invoice. Walk a location through it before you quote.
Get the checklist →Lane rate benchmark
Send a lane and a pallet count. We come back with a benchmark rate from our carrier pricing and the fees those locations tend to trigger.
Benchmark a lane →Frequently asked questions
What freight class means, why an invoice does not match a quote, how to file a claim — and the questions people ask before working with us.
Read the answers →How to find your NMFC item number
There is no free public directory, which is why this question is so hard to answer online. Where yours may already be, and why a number you have used before still needs checking.
Read the guide →What changed in Docket 2025-1
Roughly 2,000 listings consolidated, and much of that freight moved onto density. How to tell whether the item number you ship on moved with it.
See what changed →
A note on all of it. Density decides the class for most general freight, but stowability, handling and liability can override it. Everything here is built for planning. Confirm against the current NMFC before you quote anything as fact.
Rather just ask somebody?
Send us the lane and the freight. We will come back with a rate and tell you what the tools would have told you anyway.