Establish the measurement and quote basis
Choose an allocation basis that matches the decision and available evidence: a homogeneous SKU can use pieces, while a mixed shipment may need mass, cube or specific carrier charges.
Record the SKU, date, source document and unit beside the observation. Mark an estimate as provisional so it cannot be mistaken for supplier-confirmed data.
Worked purchasing example
EUR 300 freight across 10,000 identical accepted packs adds EUR 0.03/pack. If only 9,800 are usable, allocating the same charge to usable output gives EUR 0.030612/pack.
These figures are illustrative arithmetic, not market prices or a promised saving. Replace them with measurements and offers covering your actual job.
Turn the result into a decision
For mixed SKUs, keep the allocation method visible. A mass-based split is a management choice unless the transport charge actually follows mass; bulky low-mass items can be undercharged.
Use the linked calculator to check the same boundary, then include complete known order charges in comparison. Preserve unresolved items in the specification rather than replacing them with zero.
Common questions
Can I use material net mass for freight?
Only if it matches the allocation purpose. Carrier charges may depend on gross or dimensional mass and service rules. Retain the confirmed shipment charge separately from a material conversion.
Are the example prices current supplier quotes?
No. They are illustrative values chosen to demonstrate the calculation. Enter current confirmed offers for the same specification and quantity.