Shopify Reorder Point Calculator

Calculate when to reorder a product using the same transparent inputs used by Supremo: average daily sales, supplier lead time, and safety stock.

Enter your inventory inputs

Recommended reorder point

80

units

Lead-time demand
56.00 units
Safety stock
24.00 units

(8 daily sales × 7 lead-time days) + (8 daily sales × 3 safety-stock days) = 80

How the calculation works

The reorder point is the inventory level at which supplier replenishment should begin. It combines expected demand while the supplier is delivering with a safety buffer for uncertainty.

Reorder point = (average daily sales × supplier lead time) + safety stock

This calculator expresses safety stock as days of demand, then converts those days into units. Review the result when demand or supplier delivery time changes. Known promotions and seasonal events may require a manual adjustment because a recent average does not predict every future event.