Shipping diagnostics, without the spreadsheet.
1368x helps online sellers turn package dimensions and real order economics into practical shipping decisions. The goal is not to reproduce a carrier website. It is to show what is driving cost and which variable is worth changing.
What we build
Each tool follows the same path: calculate the constraint, diagnose the leak, recommend a target, then let the seller translate the operational change into money using their own real shipping cost.
Where the data comes from
V1 uses three clearly separated inputs: carrier rules you enter from the service or contract you use; business data you know from your store, shipping platform or invoices; and calculations performed by the 1368x engine in your browser. V1 does not claim to provide live carrier rates.
Privacy by default
V1 calculators run in the browser. Values entered into the calculators are not sent to a 1368x server. This makes the tools useful for quick operational math without creating an account or uploading a spreadsheet.
Important limitation
Carrier tariffs, dimensional divisors, surcharges and service limits change. 1368x provides planning diagnostics, not carrier quotes or contractual shipping advice. Always verify the current rule with your carrier or shipping platform before purchasing a label.