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Re-order Point

Re-order point = (average demand × lead time) + safety stock. When current stock drops to this level, trigger a purchase order.

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Formula, assumptions, and limits

ROP=DˉL+SSROP = \bar D \cdot L + SS
SymbolMeaningUnit
Dˉ\bar DMean demand per periodunits
LLLead timeperiods
SSSSSafety stockunits

Source: Silver-Meal & Peterson - Inventory Management

In short

Re-order point = (average demand \u00d7 lead time) + safety stock.

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