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Density Calculator

Density refers to the compactness of a substance. Freight density describes how much space an item takes up in relation to its weight, which could affect shipping rates.

How to Calculate Density

Density is calculated by dividing weight by cubic volume. The U.S. domestic shipping industry measures weight in pounds and volume in cubic feet. The volume of a parcel in cubic feet is calculated by multiplying length by width by height (in inches), and dividing the product by 1728 (the number of cubic inches in a cubic foot). The formula for density looks like this:




If there are multiple pieces in one shipment, total the weight of the pieces and divide the sum by the volume of the entire shipment, rounding up to the nearest whole cubic foot.

Freight Density Calculator

Log in to your account, and use the freight density calculator to determine the density of your shipment using inches, feet or meters. You only need to provide the four necessary measurements: weight, length, width and height. Review the density guidelines the Commodity Classification Standards Board (CCSB) uses to set class here.


Need help determining the NMFTA freight classification by density for your freight? Call 800-610-5544, or complete the contact form online for assistance.