A 14-day lead time with a safety buffer
Stock: 500, daily sales: 20, lead time: 14 days, safety stock: 50
Stock days: 25 · Reorder point: 330 units (20×14 + 50) · Days until reorder: 8.5.
Stock Coverage Calculator
Calculate how many days your current stock will last and the reorder point that keeps you from running out.
- Stock days remaining
- 25 days
- Reorder point
- 330
- Days until reorder point
- 8.5 days
Stock is above the reorder point.
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About this tool
Running out of stock and over-ordering are both expensive in their own way — the first loses sales, the second ties up cash. The reorder point is the number that avoids both: order when stock hits it, and the replacement arrives right as the old stock runs out.
How to use it
- Enter current stock, average daily sales, supplier lead time in days, and a safety stock buffer.
- See how many days the current stock covers, and the exact reorder point.
Examples
Common problems
- The reorder point is higher than the current stock.
- That means stock is already below the level needed to survive the supplier's lead time safely — an order should have gone in already. The negative "days until reorder" figure shows by how much.