Reorder Point and Lead Time Calculator
Enter daily demand, lead time, and safety stock to find the reorder point.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
The reorder point in inventory management is the stock level that triggers a new purchase order, timed so the new stock arrives before you run out. It's calculated as lead-time demand (daily demand × lead time in days) plus a safety stock buffer to absorb demand spikes or supplier delays: Reorder Point = (Daily Demand × Lead Time) + Safety Stock.
This is a core formula in supply chain and inventory management, used by retailers, manufacturers, and warehouse planners to avoid both stockouts (lost sales) and excess inventory (tied-up cash and storage costs) — the foundation of continuous review inventory systems and a staple of operations management coursework.
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