Economic Order Quantity Calculator
Find the order quantity that keeps your stock costs lowest: enter yearly demand, ordering cost and holding cost to get the ideal order size, how many orders to place per year, and the days between each order.
Result
Enter values to see the result.
How to use
- Fill in the fields above with your own figures — results update live as you type.
- EOQ is the square root of (2 times yearly demand times ordering cost, divided by holding cost per unit).
- Check the result box and adjust any rate or parameter to test other cases.
Note: EOQ assumes steady demand and constant costs — seasonal items need a safety stock on top.
Frequently Asked Questions (FAQ)
What is economic order quantity?
The order size that minimises the combined cost of ordering and holding stock for an item.
What does this calculator do?
It computes the ideal reorder quantity from annual demand, ordering cost per order, and holding cost per unit per year.
What formula does it use?
EOQ equals the square root of (2 times yearly demand times ordering cost, divided by holding cost per unit).
What is the Unit Cost field for?
It is used to show the order value: your EOQ quantity multiplied by the cost per unit.