Every carrier uses a “DIM divisor” to turn your box size into billable weight. UPS and FedEx publish 139. Most 3PLs use 166. Enter your package below and see the billable weight you are being charged for today — then let us audit the invoice.
Length × Width × Height gives you cubic inches. The carrier divides that number by their DIM divisor to get dimensional weight.
If your DIM weight is higher than your actual weight, you pay DIM weight rates. This is how carriers extract extra money from bulky packages.
DIM divisors were built to penalise light, oversized boxes. Applied to a dense 50–149 lb product they inflate your bill on a package that is already paying its own way. That gap is what our free audit quantifies on your real invoice.
Example: A 30×24×20 box that weighs 45 lbs. At the published UPS/FedEx divisor of 139 it bills as 103.6 lbs — more than double what it weighs. That is the number on your invoice today. Run your own box above, then send us the invoice and we'll tell you what it should cost.
Submit your top SKU dimensions and we'll build a custom savings model — no commitment, 24-hour turnaround.