sellerprofit_box_billing

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Works out the billable weight of one box with USPS (Priority Mail, Ground Advantage), UPS (Daily Rates and Retail Rates) and FedEx, from its outside size in inches and its actual weight, with each carrier's 2026 dimensional weight rules: sides rounded up to whole inches, cubic inches ÷ the divisor (139 for USPS since July 12, 2026, only for boxes over 1 cubic foot; UPS 139 Daily, 166 Retail; FedEx 139), rounded up to a pound, and the larger of that and the actual weight. It fits a seller who asks why a label cost more than the weight suggests, whether a box is too big, what dimensional weight a box has, or whether a smaller box would bill less. Takes lengthIn, widthIn, heightIn and weightLb or weightOz; optionally otherBox (a second box size) to compare. UPS and FedEx bill a large box (over 96 in long or over 130 in length plus girth) at least 90 lb; USPS prices by weight up to 108 in length plus girth (Ground Advantage commercial takes up to 130 in at a flat oversized price), and its row shows no billable weight past that; a box over 165 in length plus girth is refused. Returns per carrier the size weight, the billable weight, whether it bills on actual or size weight, and the largest box that still bills on the actual weight; USPS Ground Advantage cubic fit as information; warnings; and notes. No label prices (they depend on zone and account); divisors can differ by account. Dated carrier rules with sources. Free, no sign-in. Takes numbers only; nothing is stored.