Dimensional weight, side by side

Five carriers. Five divisors. One ledger that shows which one is billing your box on air.

Carrier ledger

Each row shows the dim-weight bar (the one the carrier could bill on air) and the actual-weight bar. The longer of the two is what you pay.

Longest side of the box.

Second-longest side.

Shortest side.

Scale weight of the packed box.

Selects which carrier ruleset applies (2024 baseline, 2025-08-18 per-dimension rounding, 2026-01-12 FedEx cubic surcharges).

  1. FEDEXrule applied: dim
    billable38 lb
  2. UPSrule applied: dim
    billable38 lb
  3. USPSrule applied: dimcheapest
    billable32 lb
  4. DHLrule applied: dim
    billable17 kg
  5. ARAMEXrule applied: dim
    billable17 kg
Cheapest carrier for this boxUSPS

High DIM penalty — your box is mostly air. Drop one or two inches on the longest side and re-run.

  • USPS_OVERSIZE_21_00USPS Oversize — cubic volume > 3,456 in cubed. Plus 21.00 USD.

Rules last verified: 2026-06-09Dataset version: 2026.06.09Refresh cadence: annual

Heads up

Billable weights are computed from public divisors and the 2025-08 / 2026-01 carrier rule cutovers. Surcharge alerts flag thresholds the carriers publish; final invoiced cost still depends on zone, account discounts and service level. Confirm with the carrier before quoting a customer.