Reorder Point Calculator
The reorder point is the inventory level at which you must trigger a new order so that stock does not run out before the delivery arrives. It equals your daily consumption multiplied by lead time, plus a safety stock buffer.
Formula: Reorder Point = Daily Consumption × Lead Time + Safety Stock.
Stock level over time
How to read the result
Your reorder point is the stock level at which you should reorder immediately. If your current stock is below this number, time is running short. The safety stock below it is your absolute minimum — dropping below it means a stockout risk.
Note: This calculator assumes constant daily consumption. For highly variable demand, use the Safety Stock Calculator.
Formulas
Reorder point
Daily consumption × Lead time + Safety stock
Determine safety stock
Suggestion: Daily consumption × Safety factor (days)
Maximum stock
Safety stock + Optimal order quantity
Example: NYM cable
- Daily consumption15 rolls
- Lead time5 days
- Safety stock30 rolls
15 × 5 + 30 = 105
105 rolls
Reorder point
Frequently asked questions about reorder points
Sources and further reading
Sources
- Panko, R. (2005): What We Don’t Know About Spreadsheet Errors Today, University of Hawaii
- Tempelmeier, H. (2020): Bestandsmanagement in Supply Chains, Norderstedt: Books on Demand
- Gudehus, T. (2012): Logistik 2: Netzwerke, Systeme und Lieferketten, Springer
- Bitkom Research (2025): Digitalisierung im Handwerk 2025
Next steps
The reorder point tells you when to reorder. But what do stockouts and emergency runs actually cost you? The warehouse cost calculator puts concrete numbers on it.
