Methodology

Formula selection

We use standard mathematical formulas that match the measurement being calculated. For example, CBM is based on length × width × height after converting each dimension to meters. Formulas are presented on the calculator page so users can understand how the result is produced.

Unit conversions

Unit conversions use fixed mathematical relationships. The CBM calculator converts supported length units to meters before calculating cubic meters. Display values may be rounded for readability while calculations retain greater internal precision.

Carrier and service rules

Commercial shipping rules are not universal. Volumetric divisors, rounding methods, minimum charges, payload limits, equipment dimensions, acceptance rules, and tariffs can differ by carrier, route, service, and date. A future calculator that uses a variable rule should either let the user supply that rule or identify a verified source.

No invented live pricing

CargoMeasure does not present guessed freight rates, tariffs, fuel surcharges, or live carrier availability as factual current data. Tools that need live commercial data will only be added when there is a reliable source and the limits of that source can be explained.

Verification

Calculator results are useful for planning, checking measurements, and preparing shipment information. Important commercial, safety, or compliance decisions should still be verified with the carrier, freight forwarder, warehouse, or logistics provider responsible for the shipment.