Inventory · replenishmentFREE / NO SIGN-IN

Inventory reorder point calculator

Combine average daily demand, replenishment lead time, and a chosen safety-stock quantity to identify when replenishment should be triggered.

Runs locallyNo file uploadsSource data unchanged
CALCULATION STATION
READY FOR INPUT
01

Demand and supply

Keep daily demand and lead-time day definitions consistent.

How to use this tool

  1. 01

    Enter average daily demand and total replenishment lead time.

  2. 02

    Enter safety stock plus on-hand, on-order, and backordered quantities.

  3. 03

    Compare inventory position with the reorder point; investigate demand or lead-time changes before acting.

Built for real planning work

  • Set an initial min/reorder trigger for a stable SKU
  • Review whether an open purchase order covers the current position
  • Explain the components of a replenishment threshold

Assumptions

  • Demand and lead time use calendar days unless you consistently use working days for both.
  • Inventory position equals on hand plus on order minus backorders.
  • Safety stock is supplied separately rather than inferred.

Frequently asked questions

What is the formula?

Reorder point equals average daily demand multiplied by lead time, plus safety stock.

Why include on-order stock?

A reorder decision normally uses inventory position so already-ordered supply is not ordered twice.

Does reaching the point guarantee no stockout?

No. Service depends on the accuracy of demand, lead time, inventory records, and safety-stock policy.