Use this logistics calculation for a transparent shipment, inventory, warehouse, customs, packaging, carrier, or service-level estimate when the governing units and business rules are explicit.

Class A

First dangerous-goods class.

Class B

Second dangerous-goods class.

Flag storage segregation for two dangerous-goods classes using a simplified heuristic matrix of frequently cited IMDG incompatibilities (oxidizers against flammables and water-reactives; water-reactives against corrosives); it is not a substitute for the full IMDG segregation table. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Guidance

Plain-language stowage advice for the pair.

Segregation

Segregation verdict for the class pair.

• Carrier tariffs, customs rules, dangerous-goods requirements, hours-of-service rules, surcharges, port terms, dimensional divisors, and service definitions vary by jurisdiction, contract, date, mode, and commodity. A calculation is not a booking, classification, or compliance determination.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify current carrier and authority documents, retain shipment dimensions and timestamps, test boundary cases, and reconcile estimates against invoices and operational scans.

• Certificate of Origin FTA Threshold Check

  Screen achieved regional value content against an agreement-specific threshold and optional shortfall allowance. Only use the allowance when the applicable rule explicitly permits it in RVC percentage points; this calculation does not establish preferential origin by itself.

• Freight Class NMFC Density Lookup

  Compute pallet or carton density in pounds per cubic foot and map it to the NMFC density scale. This is a density-only estimate; the applicable NMFC item and other classification characteristics can produce a different class.

• HS Code and Duty Rate Resolver

  Split a 6- to 10-digit HS or national tariff code into chapter, heading, and HS subheading, then resolve a supplied general or preferential ad-valorem rate. Rates are not inferred from the first two digits because the applicable tariff depends on the full classification, jurisdiction, origin, and date.