Weight and bar count represent purchasing and consumption differently. Choose a calculation matching how your company buys, cuts, manages offcuts and sets prices. The original Brazilian workflow uses kilograms; confirm and consistently convert the units used by your suppliers.
By weight
Cost follows the profile's estimated weight and can help compare materials. Keep weight, price and units current, including cutting losses.
By bar
Calculations start from the physical unit purchased and make utilization and offcuts visible. This may better represent purchasing when suppliers sell complete bars.
Apply consistent criteria
Document units, convert correctly and never mix net and gross values without explaining the difference. Compare results with actual purchases to adjust the rule.
Read about gross and net material in quotes.