Shipping Tools
Freight density calculator
Freight class is driven mostly by density. Enter your dimensions and weight to get pounds per cubic foot and the class range it points to.
Calculate your density
How freight density works
Density is your shipment weight divided by its volume in cubic feet. To get cubic feet, multiply length by width by height in inches, then divide by 1,728, the number of cubic inches in a cubic foot. Multiply by the number of identical pieces for a full shipment.
Density matters because it is the single biggest driver of freight class, and freight class is the single biggest driver of your LTL rate. A denser shipment usually earns a lower class and a lower rate, so getting the number right up front avoids re-classification fees later.
Shipping Tools
Density to class, roughly
Freight class is not set by density alone, but density points you at the right range. Use this as a guide, then let us confirm the exact class.
| Freight class | Density range | Typical freight |
|---|---|---|
| 50 - 55 | 35+ lbs/cu ft | Bricks, dense machined parts |
| 60 - 70 | 15 - 22.5 lbs/cu ft | Car parts, packaged food |
| 85 - 92.5 | 9 - 12 lbs/cu ft | Crated machinery, appliances |
| 100 - 125 | 5 - 8 lbs/cu ft | Boxed goods, furniture |
| 150 - 250 | 2 - 4 lbs/cu ft | Bulky, light freight |
| 300 - 500 | Under 2 lbs/cu ft | Very light, oversized items |
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