EOQ Calculator – Inventory
EOQ = √(2DS ÷ H): annual demand 10,000 units, 40 per order and 8 to hold gives the optimal 316-unit order.
- Formula and worked example included.
Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.
How Does the Economic Order Quantity Calculator Work?
Economic order quantity finds the order size that minimizes the sum of ordering and holding costs. Order too often and setup costs pile up; too rarely and storage eats you. The computation rests on EOQ = √(2 × demand × order cost ÷ holding cost). With annual demand of 10,000 units, 40 per order and 8 per unit to hold: EOQ = √(2 × 10,000 × 40 ÷ 8) = √100,000 ≈ 316 units per order, ≈32 orders a year. Each input you type is substituted the instant you release the key, and the result is expressed in exactly the units or currency you chose.
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Step 1
Start with the primary figures the Economic Order Quantity Calculator asks for.
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Step 2
Your values are substituted into EOQ = √(2 × demand × order cost ÷ holding cost).
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Step 3
Read off the computed result.
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Step 4
Vary one input at a time to see its effect.
Use Cases
Purchase-order planning
Setting standard order sizes
Warehouse cost control
Balancing setup against storage
Supplier negotiation
Testing what a discount does to the optimum
Cash-flow smoothing
Reducing capital tied in stock
Common Mistakes
Using unit price as holding cost
Annualizing wrong
Ignoring quantity breaks
FAQs
What does EOQ ignore?
How sensitive is EOQ to its inputs?
What formula does the Economic Order Quantity Calculator use?
Do I need an account or app?
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