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Reorder point & safety stock calculator
Find the stock level at which you should place your next order, including a safety buffer for busy days and late deliveries.
Reorder point
150 units
Lead-time demand
70 units
Safety stock
80 units
Tip: in StockSimple, set this number as the product's low-stock threshold and you'll get a daily email when it's time to reorder.
Stop doing this math in a spreadsheet
StockSimple tracks stock, cost prices and stock value for you, emails you when items hit their reorder level, and scans barcodes with your phone. From $6.99/month, 14-day free trial, no card needed.
Try StockSimple freeFrequently asked questions
What is the reorder point formula?
Reorder point = (average daily usage × average lead time in days) + safety stock.
How do I calculate safety stock?
A simple, widely used method: (busiest daily usage × longest lead time) − (average daily usage × average lead time). It covers you when demand spikes or a supplier is late.
What is lead time?
The number of days between placing an order with your supplier and the stock being ready to use or sell.
How often should I recalculate?
Whenever usage or supplier lead times change — at least every quarter, and before busy seasons.
Can StockSimple remind me when to reorder?
Yes. Set the reorder point as a product's low-stock threshold and StockSimple emails you a daily list of items at or below it.