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Economic Order Quantity (EOQ) Calculator

Order too often and ordering costs pile up. Order too rarely and holding costs pile up instead. EOQ is the one order size that minimizes both at once.

Reading This Tool

How To Use This Calculator

Enter annual demand, what it costs to place one order, and what it costs to hold one unit for a year.

At the EOQ, total ordering cost and total holding cost are exactly equal, that's not a coincidence, it's the calculus. The reorder point then tells you when to actually place that order, based on how long the supplier takes to deliver.

Your Inputs

Assumes constant demand, a fixed lead time, and no quantity discounts, the classic EOQ assumptions. Real supply chains often need a more advanced model once any of those stop holding.

Optimal Order Size

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Economic Order Quantity

0 units

Orders Per Year

0.0

Total Annual Cost (Order + Hold)

$0

Reorder Point

0 units

Average Inventory On Hand

0 units

Total Cost By Order Size, EOQ Marked

Total Cost Holding Cost Ordering Cost

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Holding cost per unit typically bundles warehousing, insurance, obsolescence risk and the opportunity cost of capital tied up in inventory, often estimated as a percentage of unit cost rather than a flat dollar figure.

Costing out inventory-heavy jobs or projects?