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Carriers bill the larger of what your box weighs and how much space it takes up. Enter your box and weight to see the billable weight for FedEx, UPS, DHL Express or USPS, and how much a smaller box would save.
Each carrier divides box volume by a different number.
Outside dimensions, in inches. Carriers round each side to the nearest inch.
What the packed box weighs on a scale.
Three common ecommerce boxes. Figures use the 139 divisor and round up to the next pound.
560 cu in ÷ 139 = 4.03, billed as 5 lb. A 2 lb shirt pays for 5 lb. A poly mailer often removes dimensional weight entirely.
1,152 cu in ÷ 139 = 8.3, billed as 9 lb. At 3 lb actual, two thirds of the charge is air. A 10 × 10 × 6 box bills at 5 lb.
1,152 cu in, also 9 lb. Kitting to a custom insert usually saves more than any carrier discount.
Multiply length × width × height in inches, divide by the carrier's divisor, and round up to the next pound. The carrier bills whichever is higher, that number or the actual weight.
Because it takes up truck space. A large box of something light is billed by its size, not its weight. Right-sizing the box is the fastest way to cut that cost.
DHL Express uses 139 for inches and pounds (5,000 for centimetres and kilograms), the same as FedEx and UPS. Contract rates can differ.
For most domestic services, only on packages larger than one cubic foot (1,728 cubic inches), using a divisor of 166.
By stocking several box sizes, packing each order into the smallest one that fits, and using mailers where products allow. J.M. Field packs to the box, not to one default size.
Freight class, pallets, warehouse space and more.
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