🛒 Procurement & Purchasing
Economic Order Quantity (EOQ) Calculator
Calculate the order quantity that balances annual ordering cost against annual holding cost.
Enter your figures
Results
Economic order quantity
— units
Orders per year
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Days between orders
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Annual ordering cost
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Annual holding cost
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Classical EOQ assumes relatively stable demand, fixed ordering cost, fixed holding cost and no quantity discount. Use the result as a planning baseline.
Formula: EOQ = √(2 × annual demand × order cost ÷ annual holding cost per unit).
How to use this calculator
What to enter
Enter or select the following as requested: Currency; Annual demand (units); Cost per order; Holding cost per unit/year. Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The logistics or inventory result uses the dimensions, quantities, rates, demand, or timing assumptions entered. Check the carrier or supplier rules, dimensional divisor, units, minimum charges, and any handling or customs fees.
When to use it
Use this to estimate shipment charges, stock requirements, or supply-chain timing. Verify current carrier/supplier terms and use a consistent unit and time basis.