Shipment cubic feet calculator
Total cubic feet, weight and density for a shipment of identical boxes.
How it works
Freight carriers and moving companies quote by cubic feet and weight. Multiply one box's dimensions in inches, divide by 1,728 for cubic feet, and multiply by the number of boxes.
Density (weight ÷ cubic feet) is what decides LTL freight class. Loose boxes are usually palletized for LTL, so for a quote, use the pallet's overall dimensions in the freight class calculator.
Results are estimates based on typical industry values. Confirm final specifications with your supplier or carrier.
Frequently asked questions
How many cubic feet is a box?
Multiply length × width × height in inches and divide by 1,728. A 18 × 14 × 12 box is 1.75 cu ft.
What is shipping density?
Weight divided by volume, usually in pounds per cubic foot. Denser shipments get lower freight classes.
Related articles
- How to calculate the cubic feet of a box
Learn how to calculate the cubic feet of a box from inches, centimeters or feet, with examples and the conversions you'll need for shipping.
- How to determine freight class
How LTL freight class works, how to calculate density, the density-to-class table, and how to avoid costly reclassification.
More shipping and freight tools
- Length plus girth calculator
Calculate length plus girth and check a package against common carrier size limits.
- USPS cubic tier calculator
Find your package's USPS cubic pricing tier.
- Air freight chargeable weight calculator
Work out volumetric and chargeable weight for an air or express shipment.
- CBM calculator
Calculate cubic meters (CBM) for a shipment and how much of a container it fills.
- Freight class calculator
Estimate LTL freight class from your shipment's density.
- Boxes per pallet calculator
Work out how many boxes fit on a pallet, per layer and in total.