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Dimensional Weight Calculator

Calculate a package's dimensional (volumetric) weight and compare it against actual weight to find the billable shipping weight.

in
in
in
lb
Dimensional weight —
Billable weight —
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About the Dimensional Weight Calculator

Carriers bill large, lightweight packages by their dimensional (volumetric) weight rather than actual weight, since bulky boxes take up truck and plane space regardless of how light they are.

Formula: Dimensional Weight = (Length × Width × Height in inches) ÷ DIM Divisor. Billable Weight = the greater of dimensional weight and actual weight, rounded up.

Common DIM divisors are 139 for US domestic shipments and 166 for many international air shipments, though exact divisors vary by carrier and service level — always confirm with your specific carrier's published rates.

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