Reorder Point (ROP) & Safety Stock Calculator
Never run out of stock. Calculate the optimal reorder point based on lead time and daily sales.
Reorder Point (ROP) & Safety Stock Calculator
Prevent stockouts and overstock
Never run out of stock. Calculate the optimal reorder point based on lead time and daily sales.
Average units sold per day
Days to receive order from supplier
Extra buffer for demand spikes (recommended: 10-25%)
発注点分析
Lead Time Demand
140 units
Units needed during supplier lead time
Safety Stock
21 units
Buffer for demand spikes (15%)
Reorder Point
161 units
Reorder when inventory reaches this level
実例
📦 Coffee Shop (Fast-Moving Item)
- • Daily sales: 50 bags of coffee
- • Lead time: 3 days
- • Safety buffer: 20%
- ROP: 180 bags
- Reorder when you drop to 180 bags to avoid running out
🎬 Electronics Store (Slow-Moving Item)
- • Daily sales: 2 laptops
- • Lead time: 14 days
- • Safety buffer: 25%
- ROP: 35 units
- Longer lead time means higher ROP to prevent stockouts
在庫管理と発注点
The Reorder Point (ROP) is the inventory level at which you should place a new order with your supplier. It ensures you always have enough stock to meet customer demand while your new shipment is in transit.
数式:
Your reorder point formula is simple: (Average Daily Usage x Lead Time) + Safety Stock. This prevents stockouts while minimizing holding costs.
Safety Stock is extra inventory to buffer against unexpected demand spikes or supplier delays. Retailers typically use 10-25% for fast-moving items and 20-50% for items with unpredictable demand.
💡 💡 プロのコツ: Adjust safety buffer seasonally. Increase it before busy seasons (holiday, back-to-school) and decrease during slow periods.
Automate Inventory Management
Olgax POS automatically tracks inventory and alerts you when to reorder, preventing stockouts and overstock situations.