Shipping Surcharge
Calculator
Spot dimensional-weight surprises and oversize fees before your package reaches the carrier.
What are you shipping?
Measure the package at its widest points, including bulges and packaging.
Checks whether the destination appears on a published carrier delivery-area list.
Your shipping snapshot
(2,160 in³ ÷ 139) = 15.5 lb(2,160 in³ ÷ 139) = 15.5 lbNote: Ground Economy and some international services may use a 166 divisor.
(2,160 in³ ÷ 166) = 13.0 lb(2,160 in³ ÷ 139) = 15.5 lb(2,160 in³ ÷ 139) = 15.5 lbEstimates use standard published dimensional formulas and modeled surcharge thresholds. FedEx destination flags use its public ZIP list effective July 20, 2026; the dollar amount depends on service and address type. Carrier contracts, peak season, and fuel fees can change the final charge.
Surcharges are usually about packaging.
Carriers price for both the weight you can lift and the space your box occupies. A few inches can move a package into an entirely different cost bracket.
Dimensional weight
Package volume divided by the carrier’s DIM divisor. The carrier bills whichever is greater: actual or dimensional weight.
Length + girth
The longest side plus the distance around the two shorter sides. Crossing a carrier threshold can trigger a large-package fee.
Billable weight
The higher of actual and DIM weight, typically rounded up to the next whole pound. It’s the number that drives the base rate.
Paying too much to ship air?
Speed Commerce helps growing brands right-size packaging, place inventory closer to customers, and find the best carrier mix—without adding operational complexity.
