Economic Order Quantity (EOQ)

Find the order quantity that minimises ordering plus holding cost, with orders per year and reorder point, free online.

Annual demand (units)

Cost per order

Holding cost per unit per year

Lead time (days)

Safety stock (units)

Unit price — optional (optional)

About this calculator

EOQ = √(2·D·S ÷ H), where D is annual demand, S the cost per order and H the holding cost per unit per year. Orders per year = D ÷ EOQ. Reorder point = daily demand × lead time + safety stock. Total cost = ordering + holding cost at that quantity.