16x12x12 box dimensional weight

2,304 cubic inches (1.33 cu ft, 0.0378 m³). Often used for small appliances, multi-item orders.

Billable weight floor by carrier

Packed lighter than this, you are billed this weight anyway.

Stepping down to a 15 × 12 × 10 in box drops the UPS and FedEx floor to 13 lb, 4 lb less per parcel.

This box is over 1 cubic foot, so USPS applies dimensional weight.

Your box Rounded up by USPSWhole numbers, nothing rounded

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USPS · divisor 139

Priority Mail, Priority Mail Express, Ground Advantage, Parcel Select

Billed on dimensions

Billable weight

17lb

You pay for 10 lb of air on every box.

A box 1 inch smaller on every side bills 3 lb less.

What is the dimensional weight of a 16x12x12 box?

2,304 cubic inches ÷ 139 = 16.58, rounded up to 17 lb for UPS Daily Rates and FedEx. USPS also bills 17 lb since the July 2026 change.

How heavy does a 16x12x12 box need to be to avoid DIM charges?

With UPS and FedEx, anything packed under 17 lb is billed as 17 lb. Above that, you pay actual weight.

Carrier rules verified 2026-09-30. Methodology