TOOLS LAB

Free parcel tools, connected.

Enter a package once and carry it through every tool: dimensional weight, surcharge thresholds, USPS Cubic, packaging alternatives and carton fit. Built on dated carrier rules, no sign-up for the calculators, and an analyst that explains any result.

Dimensions & weight

DIM Weight AnalyzerA 3D box that resizes as you type; actual vs. dimensional vs. billable weight across UPS, FedEx, USPS and your own divisor.Open → USPS Cubic CalculatorEligibility, cubic tier and how much room you have before the next tier; boxes and soft packs; your tier prices optional.Open →

Carrier rules & surcharges

Surcharge & Threshold CheckEvery 2026 size and weight trigger with a gauge showing how close you are, including the new cubic-volume rules, and the change that clears it.Open →

Packaging optimization

Box OptimizerBefore vs. after at the same scale: volume, DIM, billable weight, surcharge exposure, and monthly savings when you supply a cost per billable pound. Mailer option included.Open → Carton FitPack several products into the cartons you stock with a real 3D packer, see the arrangement, fill rate and DIM weight of each feasible carton.Open →

Warehouse operations & analytics

Packaging AuditUpload a package export (CSV or Excel) and see DIM exposure, carton mix, overboxing, surcharge hits and consolidation candidates, scaled to your monthly volume.Open → Carton Library OptimizerOverlapping sizes, gaps in the ladder and cartons that share a DIM weight; with audit data, which cartons earn their slot.Open → Shipping Zone VisualizerZones from one or more origins on a U.S. map, and your zone mix weighted by your own destinations.Open → Invoice Weight DiscrepancyRecorded dimensions and weight against what the carrier billed: remeasurements, unexplained adjustments and a copyable dispute list.Open →

Want the rates benchmarked too?

The tools work on one package. The benchmark re-rates every package you ship against programs you qualify for.

Test my rates