Inventory Reorder-Point Calculator

Enter your average daily usage, supplier lead time, and safety stock to find the inventory level that triggers your next order.

Average daily usage

units/day

Lead time

days

Safety stock (days of average usage)

days

Reorder point

200.0 units

Reorder when your inventory level drops to this quantity

Lead-time demand (usage × lead time)140.0 units

Safety stock (converted from days)60.0 units

Reorder point200.0 units

Reorder point = (average daily usage × lead time) + safety stock. This assumes usage and lead time are reasonably steady - highly variable demand may need a larger safety buffer.

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