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Reorder Point Calculator
Know exactly when to reorder so you never run out of stock.
Your numbers
Reorder before you hit this level to avoid stockouts.
/day
Units sold per day
days
Order → in-stock
days
Extra days of cover
Reorder point
31 days cover775 units
Lead-time demand
525 units
25/day × 21dSafety stock
250 units
Never run out of a best-seller
Connect your store and the Captain watches stock levels and warns you before a top product hits its reorder point.
How it’s calculated
Reorder point = (Average daily sales × Lead time in days) + Safety stock
Worked example
- Average daily sales
- 20 units
- Lead time
- 14 days
- Safety stock
- 100 units
- Result
- (20 × 14) + 100 = 380 units
When stock hits 380 units, place a new order.
What your result means
The reorder point is the stock level that should trigger a new purchase order so you don't run out while waiting for delivery. It covers expected demand during the lead time, plus a safety buffer for demand spikes and supplier delays.
Common mistakes
- Using average sales from a seasonal spike — reorder points should reflect expected demand, not a one-off.
- Setting safety stock to zero — any variability then causes stockouts.
- Forgetting that lead times often lengthen around peak seasons.
Learn how it works
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Frequently asked questions
What is safety stock?
Extra inventory held to absorb demand spikes and supplier delays, so you don't stock out before a reorder arrives.
Reorder point vs. reorder quantity?
Reorder point is when to order (a stock level); reorder quantity is how much to order.
Last reviewed 31 Jul 2026 · reviewed by the Dash Captain team.