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When should you reorder given demand during lead time?
Calculate a reorder point from average daily demand, replenishment time and explicit safety stock.
Example scenario
Editable demonstration inputs, not verified industry benchmarks. Enable JavaScript to calculate your own scenario.
- Average daily demand
- 150
- Supplier lead time
- 20 days
- Safety-stock units
- 1,000
- Current on-hand units
- 3,500
- Open purchase-order units
- 1,000
- Backordered units
- 300
Inventory position above / below reorder point
Example result only, not a forecast or promise.
- Reorder point
- 4,000
- Inventory position
- 4,200
- On-hand demand cover
- 23.3 days
What to do with this result
Use inventory position, not just shelf stock, and verify overdue open orders before triggering replenishment.
Know what is inside the model.
Planning model, not personalized financial advice. Your inputs remain in your browser.
Calculation method
Reorder point = daily demand × lead-time days + safety stock. Inventory position = on hand + on order − backorders.
Assumptions and limitations
- Example inputs are editable scenarios, not Aryo results or independently verified industry benchmarks.
- Demand, lead times and service levels are scenario inputs. Validate variability, physical constraints and supplier terms before ordering.