Calculatium

Reorder Point Calculator

Calculate an inventory reorder threshold from average daily demand, supplier lead time and your chosen safety stock. Uses whole-unit rounding.

Enter your values

The starting values are editable examples. Results update when you change your inputs.

Example: 8
Example: 7
Example: 20

Your result

Updates as you change your values.

Enter values to calculate.

How it is calculated

Reorder point = ceiling(average daily demand × lead time in days + safety stock).

Worked example

Demand of eight units per day over a seven-day lead time plus twenty safety-stock units gives a reorder point of 76 units.

Before you calculate

Use comparable days for average demand and delivery lead time. Enter safety stock in units, not as a percentage. This reserve must come from your inventory policy and evidence; the calculator does not infer a statistical service level.

Interpreting the result

The result is an ordering threshold, not the quantity to purchase. Define whether you compare it with physical stock or inventory position including pending orders and commitments. Seasonality and variable delivery times are not modelled.

Use the units shown beside each field. Monetary fields labelled EUR stay in euros; changing language does not exchange currencies. Results are estimates under the stated assumptions.