Dimensional Weight Calculator

Work out the DIM weight carriers actually bill you for.

Length (in)

Width (in)

Height (in)

Actual weight (lb)

Carrier

Accuracy note: Divisors: USPS 166 (only above 1 cu ft), UPS and FedEx 139 (retail). Based on USPS retail prices, temporary holiday prices in effect October 4, 2026 through January 17, 2027 (USPS Notice 123, checked October 7, 2026). Letter and stamp prices are not affected.

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