Have a questions?

 Just contact us - (602) 803-6338

Freight Density Calculator

Freight density is one factor used to calculate freight class  (the system created by the National Motor Freight Traffic Association (NMFTA) to standardize LTL freight pricing). Freight density is based on the shipment's overall dimensions and weight. Freight density.   It can range from 50 to 1. A shipment with a lower density typically has a higher freight classification. You can use the tool below to determine your freight density and estimate your freight class.

It is VERY important, as a shipper of freight, that you understand freight class. 

Getting it wrong will cost you. If you incorrectly classify your item to be shipped it can be reclassified by the freight carrier. Disputing this is difficult, time consuming and you will be charged the difference (usually without a discount).

Click Here

Freight Class

Density Calculator

Examples of Commodities and Freight Class 

Lowest Cost

Fits on standard shrink-wrapped 4X4 pallet, very durable over 50 lbs.

Class 55

Bricks, cement, mortar, hardwood flooring

35-50 pounds

Class 60

Car accessories & car parts

30-35 pounds

Class 65


Car accessories & car parts, bottled beverages, books in boxes

22.5-30 pounds

Class 70


Car accessories & car parts, food items, automobile engines

15 to 22.5 pounds

Class 77.5


Tires, bathroom fixtures

13.5 to 15 pounds

Class 85


Crated machinery, cast iron stoves

12-13.5 pounds

Class 92.5


Computers, monitors, refrigerators

10.5-12 pounds

Class 100


boat covers, car covers, canvas, wine cases, caskets

9-10.5 pounds

Class 110


cabinets, framed artwork, table saw

8-9 pounds

Class 125


Small Household appliances

7-8 pounds

Class 150


Auto sheet metal parts, bookcases,

6-7 pounds

Class 175


Clothing, couches stuffed furniture

5-6 pounds

Class 200


Auto sheet metal parts, aircraft parts, aluminum table, packaged mattresses,

4-5 pounds

Class 250


Bamboo furniture, mattress and box spring, plasma tv

3-4 pounds

Class 300


wood cabinets, tables, chairs setup, model boats

2-3 pounds

Class 400


Deer antlers

1-2 pounds

Class 500 – Low Density or High Value

Highest Cost

Bags of gold dust, ping pong balls

Less than 1 lbs.

To Get NMFC Codes

The use of a correct Freight Class and NMFC are important to getting your best freight rate and avoiding re-billings at a higher rate based on a more accurate description or per the industry standard guildlines. Please contact a Best Move USA representative for assistance with your NMFC lookup.

Important Notice: The National Motor Freight Traffic Association does not allow for freight classes or NMFC codes to be posted online to the public.

What Factors Go into Determining Freight Class? 

Before you determine your freight class for your shipment, you must identify certain factors about your specific freight. Freight class is based on weight, length and height, density, ease of handling, value and liability from things like theft, damage, break-ability and spoilage.. The definitions for each are as follows:

Density – Is your product heavy or light?

Stowability - How is your shipment being packed into the vehicle? For example,                       shipments that can be stacked receive a more favorable                                       classification than shipments that require all of the space from the                       floor to the ceiling.

Handling – How difficult is it to load and unload the freight?

Liability – Is the freight breakable? Does it have a high value?

Let's start with an example shipment.

A standard 40" by 48" pallet is stacked with boxes of products 48" high.

The pallet and its contents weighs a total of 425 lbs.

First the volume is calculated by multipled the dimensions together:

[Text Box: 40 x 48 x 48 = 92160 cubic inches]

Now the volume is converted from cubic inches to feet:

[Text Box: 92160 / 1728 = 53.33 cubic feet]

To get the density we divide the weight by the volume:

[Text Box: 425 / 53.33 = 7.97 pounds per cubic foot]  

The density is looked up on the table at the left. The density is above 7 but less than 8, so the class is 125.

Use these as an esitmate only.   The density is the main factor for determination of class but some other factors can effect it such as value of freight, oversize, special loading/unloading requirements, perishability, etc. Each hauler has rules for determining freight class.  Best Move USA accepts no liabilty for any inaccurate class estimates. For any questions about classification and accuracy you can contact  National Motor Freight Traffic Association (NMFTA) at www.nmfta.org/Pages/ContactUs.aspx.