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Free Lead Time Calculator

Calculate your reorder point and safety stock. Know exactly when to place your next order to never run out of inventory.

Reorder point
Safety stock levels
Order deadline date

Calculate Lead Time

Lead Time Components (days)

Demand & Inventory

Average units sold or used per day

Enter your lead time and demand details to calculate your reorder point

Never Miss a Reorder Point Again

Supply Chain tracks your actual lead times for every supplier, every product — and alerts you exactly when to order.

Smart Alerts

Get notified when stock hits your reorder point

Lead Time Tracking

See actual vs expected lead time for every order

Order Calendar

See all upcoming order deadlines in one view

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Frequently Asked Questions

What is a reorder point?

The reorder point (ROP) is the inventory level at which you should place a new order to avoid running out of stock. It accounts for both the demand during your lead time and a safety buffer. Formula: ROP = (Daily demand × Lead time) + Safety stock.

How much safety stock should I carry?

Safety stock protects against lead time variability and demand spikes. For importers, 2–4 weeks of demand is typical, but it depends on how variable your supplier lead times are. If your supplier frequently misses dates, carry more.

What should I include in lead time for imports?

Total import lead time includes: supplier production time (2–8 weeks), ocean shipping (2–6 weeks), port processing and customs clearance (1–2 weeks), and delivery to your warehouse (1–3 days). Air freight dramatically reduces shipping time.

How does Supply Chain help with lead time management?

Supply Chain tracks actual lead times for each supplier and each product. Over time, you'll see your real average lead time and variability, so you can set accurate reorder points and safety stock levels.

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Join importers managing orders, shipments, and stock levels in one place.

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