Understanding the LTL Freight Class Calculator
Shipping Less-Than-Truckload (LTL) freight can be a complex process, especially when it comes to determining accurate pricing. The most critical factor in determining your shipping costs is your freight class. Our free freight class calculator helps shippers, logistics managers, and business owners instantly estimate their shipping class using the density of their cargo.
How to Use Our Freight Density Calculator
Using our freight class calculator by dimensions is incredibly straightforward. Follow these simple steps to determine your Pounds per Cubic Foot (PCF) and your estimated freight class:
- Measure your shipment: Obtain the exact length, width, and height of your packaged freight in inches. Include the pallet dimensions if the freight is palletized (which is crucial for a pallet freight class calculator).
- Weigh your shipment: Determine the total weight of the item in pounds, including packaging and the pallet.
- Input the data: Enter the dimensions and weight into the corresponding fields in our shipping class calculator above.
- Specify quantity: If you are shipping multiple identical pallets or boxes, enter the total quantity.
- Calculate: Click the "Calculate Freight Class" button. The tool will instantly provide your PCF density, total volume, and estimated freight class.
The Density Formula
Density (PCF) = Total Weight (lbs) / Total Volume (cubic feet).
To find cubic feet: (Length x Width x Height in inches) / 1728.
NMFC Freight Class vs. Density-Based Freight Class
While an nmfc freight class calculator provides a solid baseline based on density, it's important to understand how the National Motor Freight Traffic Association (NMFTA) assigns official codes. The NMFC system categorizes freight into 18 different classes ranging from Class 50 (lowest cost) to Class 500 (highest cost).
The NMFC evaluates four primary characteristics:
- Density: The space the item occupies in relation to its weight. This is what our ltl freight class calculator measures perfectly.
- Stowability: How difficult it is to pack the item alongside other freight in the trailer.
- Handling: Any special requirements needed to load or unload the freight.
- Liability: The risk of freight theft, damage, or damage to surrounding freight (e.g., hazardous materials).
For items that have a high density, are easy to stow, easy to handle, and have low liability, you will secure a lower shipping class (like Class 50 or 60), resulting in lower shipping rates.
General Density to Freight Class Chart
If you prefer to check manually after using our freight density calculator, here is the standard density threshold chart used by most LTL carriers:
| Minimum PCF (Density) | Estimated Freight Class |
|---|---|
| Less than 1 pcf | Class 500 |
| 1 but less than 2 pcf | Class 400 |
| 2 but less than 3 pcf | Class 300 |
| 3 but less than 4 pcf | Class 250 |
| 4 but less than 5 pcf | Class 200 |
| 5 but less than 6 pcf | Class 175 |
| 6 but less than 7 pcf | Class 150 |
| 7 but less than 8 pcf | Class 125 |
| 15 but less than 22.5 pcf | Class 70 |
| 30 but less than 35 pcf | Class 60 |
| 50 pcf or greater | Class 50 |
* The table skips some intermediate classes for brevity. Our calculator accounts for all 18 standard breaks.