Economic Order Quantity Calculator
Find the optimal order quantity that minimizes the sum of your ordering and inventory holding costs. Enter three numbers and get the full breakdown instantly.
Results
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Optimal Order Quantity (EOQ)
Orders per year—
Order cycle (days)—
Average inventory (EOQ/2)—
Annual ordering cost—
Annual holding cost—
Total annual inventory cost—
Runs entirely in your browser. Nothing is uploaded.
How it works
STEP 1
Enter demand & costs
Provide your annual demand, the fixed cost per order, and the annual holding cost per unit.
STEP 2
Get the EOQ
The calculator applies the Wilson formula: EOQ = sqrt(2DS/H), then shows optimal order frequency and total cost.
STEP 3
Review the breakdown
See annual ordering cost, annual holding cost, and how they balance at the EOQ minimum.