Freight Class Calculator

PWL has developed a freight class calculator you can use as a guide to determine a shipment’s volume and density.

Density is one factor used to calculate freight class. It’s based on the number of pieces in the shipment and the shipment’s dimensions and weight, ranging from 50 to 500. A shipment with a higher density typically has a lower freight classification.

Enter Shipment Dimensions

Shipment Density

LBS per cubic foot

Freight Class




In addition to an estimated density, our freight density calculator will provide you with a recommended class for your shipment. The freight class chart below is an abbreviated scale you can use to classify shipments.

Less than 1class 400
1 but less than 2class 300
2 but less than 4class 250
4 but less than 6class 150
6 but less than 8class 125
8 but less than 10class 100
10 but less than 12class 92.5
12 but less than 15class 85
Over 15class 70

If you have questions about how to use the shipping class calculator or otherwise determine the density of your freight, a PWL quote Account Representative can help. Simply call 248-707-1991 or utilize our LIVE CHAT for immediate  assistance

Freight Shipping | US Zip Codes

The easiest way to match zip codes with a city and state. Simply enter the zip code you wish to look up and we’ll do the rest.

Please enter the destination postal code :