Business tools
Inventory Reorder Point Calculator
Estimate lead-time demand, safety stock and the inventory level at which to place a replenishment order.
Choose a calculation mode and enter demand and supplier lead-time assumptions. Current inventory and planned order quantity are optional.
The calculation runs locally in your browser. No input values are saved or sent to a server.
Estimate when it is time to replenish inventory.
About this calculator
Reorder point
The estimated inventory level at which a replenishment order should be placed.
Lead time
The time between placing an order and receiving replenishment inventory.
Lead-time demand
Expected inventory usage during the supplier lead time.
Safety stock
Additional inventory held to help protect against demand or lead-time variability.
Planning estimate
This calculator provides a planning estimate. Actual reorder decisions may also depend on supplier reliability, minimum order quantities, seasonality, storage capacity, service-level targets and demand volatility. This is not a guaranteed stockout-prevention level.